The crippled and crumbling auto industry has left so many in the Detroit area without a job and without much hope.
Leno says he hopes the shows can provide a little relief even if only for a few hours. "I'm a big believer in the power of getting out forgetting your troubles, at least for a night, you know?," said Leno.
Along with the free show tickets, parking was free.
About 20,000 people were able to attend each show at The Palace.
Leno is only the eighth comedian to play The Palace in the building's 20-year history.