Price: $43,395 (i3 Mega World BEV)
Cost of tech: $2,500 (package)
The BMW i3 is an electric vehicle with respectable environmental credentials (much of its carbon fiber bits are produced using hydroelectric power, and almost the entire car is recyclable) and a unique approach to "one-pedal" driving. Step on the accelerator to go forward, and lift off it to begin slowing down. In practice, it's most effective in dry, ideal weather conditions, and unlike the other vehicles here, the i3's systems work best in a straight line; no steering assist is offered. It's the most advanced system we've seen on an EV, however, and put to the test, it works.