Remember when your parents brought home their first new car, and you got really excited because it had electric windows and a radio you could take the front off, and stick it in your pocket (to stop it getting stolen, rather than to use it as a proto-iPod, sadly). If you’re in your 40s today, you’ll well remember those apparently halcyon days. Since when, the technological arms race in the motor industry has accelerated, all-but doing away with mucky old diesel and petrol engines, bringing in touchscreens the size of a family TV in the 1980s, and computers so smart...