"The Love Car Displacement" is an episode of the television series The Big Bang Theory that first aired on CBS on January 20, 2011.
Amy asks Penny to join her and the guys on a trip to a science conference in Big Sur, California.
Before they get on the road, Sheldon, elected "travel supervisor" by the others after threatening to filibuster, sets up an extensive program, deciding where and when they take breaks, and seating arrangements.
Penny asks to sleep in Sheldon and Leonard's room due to Amy's nightmare post-effects: biting and scratching.
To make matters worse, Raj's drunkenness starts to get the best of him and a frustrated Penny searches for someone in the audience to drive her back to Los Angeles, and leaves with Glenn, much to Leonard's dismay.
Howard and Bernadette are still not speaking, and a police car pursues Leonard as he is speeding, bothered by Penny leaving with Glenn.