: Howard sets up a highly advanced driving simulator in the apartment to help Sheldon practice. Sheldon performs abysmally, virtually crashing into pedestrians and a pet store.

When Leonard begins working the night shift at the university to use a high-powered laser, Sheldon is left without his primary mode of transportation. Sheldon's refusal to take the bus (due to a previous incident involving bungee cords and a lack of seatbelts) forces him to rely on his friends for rides. After he alienates Penny, Howard, and Raj with his backseat driving and relentless scientific trivia, the group stages an intervention to force him to get his driver's license. Key moments include:

: Sheldon declares himself "Homo Novus Automobilis" (too evolved to drive) and decides to live in his university office instead of commuting. Eventually, it is revealed that Leonard finished his project a week early but didn't tell Sheldon so he could enjoy a quiet apartment. Cast and Guest Stars