Grainy pictures are pretty neat, but spy videos of an unreleased car in motion are a little more titillating. That's what we have this morning, video of the BMW i8 concept car motoring around in the snow -- flanked by a series of rather more pedestrian Bavarian autos. The i8 is the auto formerly known as Vision EfficientDynamics, name shortened but concept kept the same: 62MPG from a vehicle that's still fun to drive and reasonably quick -- 0 to 62 in 4.8 seconds. The qual
