Karaoke meets ``Cash Cab'' in this musical game show hosted by actor and comedian Craig Robinson, who poses as a driver picking up contestants in need of a ride. Once they enter the car, Robinson surprises the passengers by letting them know they're contestants on a game show. They compete in a series of challenges during which they must sing their favorite tunes, finish lyrics or act out songs. Some tasks require the contestants to recruit pedestrians to take part in the game. Several teams are featured in each episode, with the two teams that earn the most prize money ending the night at a surprise location, where they must perform karaoke for a crowd that determines the grand prize winner. As part of the show's anything-can-happen atmosphere, special guests sometimes make appearances to help the singers.