Drivaware LaneFX is a controller that links your car's power mirrors and turn signals, and whenever you use your turn signal, it automatically moves the mirrors outwards so you can instantly see in your blind spot. LaneFX can also be outfitted with ParkFX, which tilts both mirrors down so you can see where you're parking.
What a great idea—this beats the hell out of that "objects are closer than appear" concept which gives you a distorted view of reality in that right-side rearview mirror.
LaneFX does make two assumptions, though: that you have power mirrors in your car and that you actually use your turn signals when you're going to change lanes. You do signal when you're changing lanes, don't you? Prices start at $197, but we're thinking installation must be rather complicated.