Apparently to drive some limos you need a CDL (commercial driver's license, like a truck driver). But not for most of them. You'd need one for a stretch hummer/SUV according to the driver.
Played: Pitboss 18 - Kublai Khan of Germany Somalia | Pitboss 11 - De Gaulle of Byzantium | Pitboss 8 - Churchill of Portugal | PB7 - Mao of Native America | PBEM29 Greens - Mao of Babylon