Since the turn of the 20th century, designers have competed to build them faster, taller, and steeper. But as technology pushes the envelope with flips, weightlessness, and more g-force than a jet, how many thrills can the human body take?

Legendary drivers lead us on a record-breaking race through a century-long search for sheer acceleration that began before World War One, when hot-rodders modified Model-T Fords to see how fast they could go. Today's dragsters can cover a quarter-mile from a standing start in 4.5 seconds, hitting top speeds above 330 m.p.h. Top driver Gary Clapshaw shows us how to put together a modern dragster, and revolutionary designer Bob Norwood unveils his newest car.

They're fast. They're powerful. They come in a hundred shapes and a thousand colors. To some, they're the symbol of freedom. To others, they simply spell trouble.

Limousines have been stretched to greater and greater lengths--as has the notion of what can be done inside them! You can have a rolling disco in a stretched SUV, go for a rumble off-road in a monster truck limousine, or take a direct hit in an armored limo and still make your meeting. So, sit back, relax, and enjoy the ride of your life as we review the history of chauffeured limousines--from weddings, proms, and funerals to the ultimate adult playpen and the President's "Cadillac One.

Get behind the wheel and take control of the some of the largest, fastest, most powerful machines on the planet. These aren't your average vehicles--and handling one of these rides is unlike anything else. But you need more than just a learner's permit to take control of these vehicles...you need training, experience, and above all, guts--if you plan to sit in the Driver's Seat.

In less than a century, the world went from dirt tracks to highways, from propeller planes to space travel, from sailboats to supertankers. And in the process, we have created a glut of traffic on roadways, railways, airways, and seaways--traffic that must be controlled, managed, and regulated. We'll see how it's done.

There is no more potent demonstration of man's resolve than the design and construction of tunnels--avenues that slice through a conspiracy of elements in the single-minded determination to connect two points. Whether underwater, blasted through solid rock, or negotiating the shifting strata of earth's unstable crust, we explore the design and engineering of famous tunnels...and the motivation behind them.

The colorful history of street railways, from turn-of-the-century horsecars to today's sleek light rail systems. Uses rarely seen film from archives and private collections to recall a fascinating part of urban history.