In one of Top Gear’s more infamous (and yet informative) vehicle tests, Jeremy Clarkson pitted a Toyota Prius against a BMW M3 to see which car could get better gas mileage. The catch was, the Prius had to drive as fast as it could, while all the M3 had to do was keep up with the hybrid. The end result was the Prius got 17.2 mpg, while the M3 got 19.4 mpg. The point, according to Clarkson, is that it isn’t what you drive, but how you drive.
Now we can debate the merits of the video (posted below) all we want. But the point is, you can get decent mileage if you drive, well, gingerly. It isn’t easy, but Garmin, maker of GPS devices, has come up with a device called the ecoRoute hd. This device plugs into your car and calculates just how green you are driving, no matter what you are driving. It’s pretty cool, in a green, Big Brother sort of way.