People think that you need a gigantic collection of Lego to be able to build cool stuff, but even with a handful of small bits, you can make great things. These micro cars from builder Starscream Soundwave are a perfect example. There are not a lot of elements here, yet they manage to showcase the cars they are modeled after nicely.
Saab 900 Turbo - The sharp angles on Saabs really lend themselves to Lego.
Ariel Atom - I love this car.
1970 Plymouth Barracuda
1970 Range Rover with trailer
2003 Range Rover
Audi Quattro S1
1966 Batmobile and The Tumbler
The F1 Collection - From left McLaren M23, Ferrari 312T2, Tyrrell P34 and Lotus 77