Cars cars cars

You car will drive by itself... and do a better job than you :p

"Smart" cars can be as efficient as hybrids.
For now researchers are experimenting with toys (do they ever do anything else :D ).

And if you are interested in these kind of things: Leonardo invented (also) the car :}
"... The new interpretation came from Professor Carlo Pedretti, director of the Armand Hammer Center for Leonardo Studies in Los Angeles, who noticed a kind of squiggle in the sketch eventually identified as coiled springs.
..."
Yes, sure, that's Leonardo for you: change a squiggle into a spring, and it turns out that he invented even the modern toilet... Or was that Nostradamus...? :]