Volo, House of Cars

Seeking to add to their father's automotive museum, Jay chases down a 1934 Ford, while Brian revisits a $1.3 million-dollar 1967 Shelby.

Brian is on the hunt for the legendary 1936 Mercedes-Benz Von Krieger 540K Roadster, and he takes a risk on a truck full of mystery Hollywood movie cars; Jay helps two Iowans surprise their grandfather with a 1947 Buick Roadmaster.

The Grams family has a lead on a Cadillac owned by music icon Elvis Presley, which leads Brian to a strange man in the sticks of Oklahoma; Jay visits Bob Moore Cadillac and adds some classics to his inventory.

Jay goes on his annual million dollar car-buying spree in Oklahoma; Brian goes after a rare pot-bellied stove from a 1930s recreational vehicle for his father.

Greg thinks he's found the Dizzy Lizzy, Walt Disney's Model-T Ford capable of doing wheelies and 360-degree turns; Jay hunts for cars; Brian buys a 1980s Disney double-decker bus in Whiting, Ind.

Brian buys the wacky "Cat in the Hat" movie car, traveling to Los Angeles to inspect it; meanwhile, Greg sets his sights on the first ever house-bus built by Spartan in 1949, and sends Jay to frigid Detroit to collect it.