President Barack Obama will make an appearance in Jerry Seinfeld's "Comedians in Cars Getting Coffee" on Dec. 30. In a promotional video for the web series' seventh season, Seinfeld pulls up to the South Lawn of the White House in a 1963 Corvette Stingray Split Window Coupe. The series on Crackle, Sony's free streaming network, hosts A-list comedians as they ride to get coffee with Seinfeld, usually in high-end antique cars. For the episode with Obama, which taped Dec. 7, the Corvette did not leave the South Lawn, the White House said. Obama and Seinfeld took turns driving and then sat down for coffee in a staff dining room to discuss "many of the little things that make life in the White House simultaneously remarkable and routine,"