Grinder Squared

Here's a great example of American ingenuity in action:  the Hot Wheels Twin Mill.  It started out as one of those designs dreamed up as a toy, as in the little gravity-powered toy racers a lot of us enjoyed immensely as kids.
Then somebody got the great idea to turn it into an actual car.  A few years, a whole bunch of man-hours, and some tractor-pulling multi-engine technology later, the real car was actually ready to drive into car shows across the country.  Amazing.  And you should see the view through the windshield.


Photo by chevellenut69ss on flickr.
And of course some more info on the Twin Mill:
http://www.streetrodderweb.com/milestones/0307sr_milestone_twin_mill/index.html
http://hotwheels.wikia.com/wiki/Twin_Mill