Not sure why this is news. They've existed in Europe for over a decade. i've had them on my VW Golf almost since I bought it (Mirrors: http://www.ecstuning.com/Volkswagen-Golf_VI--TDI/Exterior/Mi...) they're convex, and variable radius. They're great. MUCH better than the "Car and Driver" technique. The problem is, as usual, regulator - DOT requires carmakers to sell new cars with a flat drivers side mirror.