"They Changed the World--the Model T and the Assembly Line" Clip from Interview with Bob Casey, 2011

Ford constantly tweaked Model T assembly lines at its Highland Park plant for efficiency. In 1914, wheels and radiators were conveyed to a platform and slid down ramps for installation on the same line. By 1925, wheels (with tires already mounted and inflated) were conveyed directly to workers, who installed them on both sides of the chassis at once.

Television host and stand-up comedian Jay Leno is an avid vehicle collector. Housed in Leno's "Big Dog Garage" in Southern California, his collection spans 100 years of automotive history, with antique vehicles, hot rods, muscle cars, steam cars, and electric cars. The collection also has a number of rare cars and over sixty motorcycles, including a turbine motorcycle.