After Leno's 20-year run as host of the "Tonight Show" came to an end, the comedy legend turned his attention to his NBC-produced web series called "Jay Leno's Garage". 

Located in a series of large hangars at the Bob Hope Airport in Burbank, California, Leno's Big Dog Garage has been such a sensation that his NBC-produced web series on its contents has become one of the most popular shows on Youtube.

The web series became so successful that the Leno returned to TV in 2015 with an expanded version of the show on CNBC. 

This summer, "Jay Leno's Garage" is back on CNBC for a second season. 

Leno's collection, estimated to include more than 150 cars and motorcycles, ranges from daily drivers to Smithsonian-worthy pieces. Most of the cars are restored and looked after by Leno and a small team of mechanics. Even more amazing, every car in garage is licensed and legal to drive.