Over at Instructables they have detailed instructions on just how to do this. It works best if you have the original, crappy stereo that came with your car handy, but it'll work with other models if you measure properly. Just get yourself a bunch of epoxy, some Velcro, an ironic cassette and a few hours of your time and you'll be good to go. Unless someone with a fetish for old cassette decks walks by your car, that is, but that's probably a risk you're willing to take. [Instructables]

It's USB and Bluetooth-friendly, storing six Bluetooth presets that are sure to accommodate every gadget you carry. Just like fancy schmancy cables, all the connectors are gold plated, and there's even high-voltage/low impedance 24-bit D-to-A converters. Sounds like some serious audio guff. [Eclipse]

Sheesh. It'll not only break the windows in your car, but maybe every window within 50 feet of where were you're driving as well as the sanity of all those within earshot. Not only will you be first required to drop serious bucks on a car audio system worthy of such power, one of these amps will cost you a buck a watt—$10,000 total. Look at the monster specs of this beast:

Kicker WX10000.1 Mono Channel Amplifier Specifications:
Mono-Channel Model (at 14.4V)
Power (watts), Signal-Modulated 2 Ohm mono: 10,000 x 1
Dimensions: 3.75″ x 17.75″ x 35″
Frequency Response (Hz): 20-200, +0/-1dB
Input Sensitivity: 170mV-5V
Signal-to-Noise Ratio: 95dB, a-weighted, re: rated power
Low-Pass Crossover: 24dB/octave, variable 50-200Hz
High-Pass, Subsonic Crossover: 24dB/octave, variable 20-60Hz
KICKEQ Bass Boost: Variable to +18dB, centered at 40Hz
Warhouse Control Module: Available separately
Weight: 67 lbs.

[Kicker, via Audio Junkies]

Connect your iPod via a cable and it'll show you iPod menus and give you voice control over all your music. If you don't have an iPod, there's a 3.5 mm stereo jack to plug in any MP3 player. Neat stuff, and a great way to avoid those awful FM-based iPod-to-car-radio links. No pricing or availability yet. – Charlie White

Product Page [ALAC GmbH, via BlueTomorrow]

Now he's shrunk all that down to a single digital signal processor (DSP) and stuffed it into a JVC KD-S100 car stereo, where the technology makes its debut today.

How can this possibly work?

The chip can be specifically tuned with more than 120 points of adjustment for the car in which it resides, teasing studio-quality sound out of small, cheap speakers in a noisy environment. Said Bongiovi, "It's so precise that the hatchback Ford Focus has a different tuning from the regular one."

The chip's algorithms can also be run in software, and the technique works on inexpensive home theater speakers, too. But he said there are no plans to develop the technology beyond the car stereo market. Yet. – Charlie White

New chip provides high-end sound even for low-end speakers [Gulf in the Media]

Press Release [Via Tech Digest]

Specs and pricing on bestselling bluetooth headsets [Amazon]

Only problem is, other than supplying power, that dock connector doesn't really connect to anything having to do with music—you'll need a cassette adapter or other means to get that music into your car audio system via TuneFlex's built-in 1/8" stereo line-out audio jack. Of course, Griffin suggests that you hook TuneFlex up to its $50 iTrip FM transmitter (or any of the numerous other devices it offers) to accomplish this task. The good thing is, it puts your iPod at a level where it's probably safer to control while you're driving.

Product Page [Griffin Technology]

Audi's $11,000 Car Stereo [MoblieMag]

The Ratoc iPod Digital Wireless Connection Kit includes the clampable RS-Link1P-VW transmitter, a receiver, and an interface module. Still seems like a lot to hook up just to hear our polka mashups in a Jetta, and we'd like a foam iPod holder for the Beetle's flower cup. But there's no FM static and no extra set of playback controls.

iPod Digital Wireless Kit to Volkswagen Factory Radio [RATOC Systems]
Previously: Ratoc Systems REX-Link "Wireless Your iPod" Series

Arc also had this motor-speaker out on the floor. Sure, I've seen these spazzed-out boats before, but these speakers on the inside blew my mind. Who sits down there listening to music, and what are they rocking out to?

The idea of HD Radio has been around for a while, but with satellite taking center stage, we haven't heard much about it. iBiquity is trying to put things into perspective for us with a reference design that consists of an universal HD Radio tuner box, separate protocol converter and an adapter cable, and would use already available chipsets to turn any satellite-radio-ready OEM or after-market car stereo into an HD Radio that receives digital AM and FM broadcasts. This would mean you wouldn't have to replace your existing head unit. The package would cost between $250 and $300 and should be available by this summer, if manufacturers like what they hear.

iBiquity Designs HD Radio Car Adapter [TWICE]

The AVIC-Z1 [pictured] has a built-in hard drive and enough CPU oomph to render 3D mapping graphics. 30GB hard drive, XM NavTraffic, music library and DVD playback, a 7-inch touch-screen, and Bluetooth phone connectivity. Expect it in April '06 for $2250.

The Z1 uses something called 'Smart Routing' which tries to keep track of stop signs, traffic, and other information to find the best route. It can even learn from your past travel to change its suggested routes to take you near destinations that you have gone by in the past—even if the waypoints aren't exactly the most efficient way to your final destination. Potentially frustrating, but a step in the right direction for intelligent driver routing.

The Z1 can rip CDs to its HDD (up to 10GB of the internal hard drive), as well as 'enhanced iPod functionality.' It's hard to say if that means standard play/skip controls or if it will also display iPod track/ID3 information.

More navigation and head units after the jump.

The AVIC-N3 is a single DIN chasis unit with a 6.5-inch touchscreen, but is DVD-based instead of HDD based. Enhanced iPod controls and XM interface like the Z1. Expect the N3 in March 2006 for $1,800. The 2006y Tele Atlas database now offers lane information data for 50 markets and detailed city maps for 30+ cities.

The AVIC-D2 is also DVD-based, with XM NavTraffic capability. It's a double-DIN unit, meaning its 6.5-inch display doesn't slide out on a motorized track like the N3, but instead sits open. It's available in March for $1,500.

What we are now not reporting on is the uncomfortable moment when Pioneer's suit is explaining what makes "Generation Y" so individual. Did you know we like being unique?

Apparently, Gen Y folk also like OLED displays in their in-dash CD players. Of the 14 new models of Pioneer head units, most will include XM and Sirius control as well as that 'enhanced iPod control.' Two units have Bluetooth cell phone connectivity. In a laudable move, most of the new models also include a standard miniJack line-in, should you decline to purchase the iPod connectivity kit.

The AVH-P6800DVD is a double-DIN head unit with a built-in 6-disc DVD changer, as well as a 7-inch touch screen. Also, Bluetooth cell phone connectivity. Expect it in May of '06 for $1,400.

Pioneer is introducing a new high-end aftermarket car stereo branding called 'Premier Reference Series' (PRS). It's apparently awesome, as judged by the monotone description of "deep, rich bass." Pioneer is also talking about new shallow-depth subwoofers that are less than 4-inches deep. Prices start at $160 and should be around in March.