David Letterman's Soda Powered Rocket Car 4.74K James O'Donnell 06/30/10 11:14AM Filed to: The Late Show The Late Show David Letterman WoW Science mentos TV Video As we all know, soda + mentos = a good way to kill an afternoon. David Letterman has taken that formula and used it to offer us a new way to cure our nation's oil dependency. Suck on that, BP!