Trek has a couple of hipster cruisers with belt drives coming out. Kind of touted as the next big bike thing. I don't mean like the Hammerschmitt. This is more along the lines of the general public. For that reason I cannot rip on it. Belt drive for a commuter bike or cruiser might be mo fun. Not the best idea for dirt. Obviously a rock getting sucked up into the pulley would stop the show all together.
Trek has two models out now.