Celebrate the animal that helped man change the world--the horse. Take a look behind-the-scenes at the thoroughbred racing industry in Lexington, Kentucky. Visit state-of-the-art veterinary clinics and breeding farms that provide everything from arthroscopic surgery to "bachelor-padded" breeding sheds. See how a Colorado prison proves that both wild horses and inmates change for the better when paired up as part of a Mustang protection program. Learn the different ways that cultures have used horses throughout the ages and finally, see why French Canadian connoisseurs think horse tenderloin means fine dining.

Buckle up for a rip-roaring ride through the world of extreme horsepower. Experience the fastest accelerating cars on earth. Find out how horsepower was first coined as a marketing tool for the steam engine in the early 1800s and meet the horsepower police--the Society of Automotive Engineers who test today's most powerful car engines. Feel the amazing power of Unlimited Hydroplane racing as 3-ton boat-beasts careen across water at speeds of over 200 miles per hour. Journey to the bowels of an enormous container ship where the world's most powerful diesel engine provides over 100,000 horsepower. At the Hoover Dam, watch as it harnesses the enormous power of water. Explore the 80,000 horsepower pumping units at the Edmonston Pumping Plant that delivers 2-billion gallons of water a day to thirsty Californians. And sit behind the steering wheel of a new generation of hybrid cars that boast 400-horsepower yet get 42 miles per gallon of gas.

The story of the construction of our grand national highway system, from its beginnings in 1912 to its completion in 1984.

To see how people, products, and more move around America, Adam Richman explores how a legendary long-hauler meticulously custom-builds each truck at Daimler. Then, flying cars may finally be a reality, but will helicopters that cost the same as pick-up trucks carry the day? And find out how we might be zipping around the country in tubes! Plus, see how the iconic Union Pacific Railroad is preserving the past while chugging into the future.

A spectacular roadway nearly 120 miles long, the Overseas Highway links mainland Florida with the Florida Keys, and contains 51 bridges, including the Seven-Mile Bridge. A boat was the only mode of travel from Miami to Key West until oil tycoon Henry Flagler completed his railroad line in 1912. After a 1935 hurricane destroyed 40 miles of track, the scenic highway was built using Flagler's bridges. A $175-million refurbishment that ended in 1982 resulted in today's remarkable Overseas Highway.

At 4 State Trucks in Missouri, the Chrome Shop Mafia adds some truckers' "bling" to a big rig as viewers tour its 35,000 square-foot treasure trove of chrome. In Illinois, learn just how automotive parts get their luster in a complex electroplating process. And out on the road with some bikers, take a look at how Harley Davidson puts chrome to work both as a decorative surface and a protective covering on engine parts. At a classic car gathering, collectors show off their sparkling tailfins and grilles--and in Michigan, peruse a unique collection of more than 3,000 chrome hood ornaments. See how workers chrome-plate plastic, and learn how chrome puts the "stainless" in stainless steel. Find out how stainless steel flatware is manufactured and explore the iconic, shimmering art deco dome of the Chrysler Building. Finally, a Colorado artist will show viewers how he rescues old chrome car bumpers from the scrap yard and transforms them.

Toxic traffic is everywhere! An average of 800,000 shipments of hazardous materials hit our highways and railways daily. From Wild West wooden crates filled with explosives to HAZMAT containers of nuclear waste, we shadow dangerous cargo. We ride shotgun on a hazardous material shipment that's tracked by satellites; hunt down the hush-hush "ghost fleet"--trucks carrying classified government materials; and board a Con-Air flight moving another kind of nasty stuff--dangerous felons!

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.