"Riding in Town Cars with Boys" is the tenth episode of season 5 of the TV series Gossip Girl.
Similar to previous names in the series, the title of the episode references a piece of media.
The title reference is from the 2001 film Riding in Cars with Boys starring Drew Barrymore.
Nate suggests that he should call Blair but Chuck doesn't because "Louis is the father of her child, there's no way she'll give that up".
Tripp wasn't invited because he had discovered that his wife's fake infidelity was William's doing.
Blair is feeling the pressure of the paparazzi and decides she needs to leave her penthouse.
They start a list of pro's and con's but Blair comes to the conclusion that Louis is the father of her child and that she has to stay with him.
Serena is looking through old Gossip Girl blasts and comes upon the revelation that, besides Nate, Dan was the last good man she's dated.
Serena tells him he needs to stop scheming in order to be with Blair and gives him her location.
Blair tells Dan that Chuck said she needs to marry Louis and she is unable to hide her unhappiness.
Louis is shown banging on Dan's loft doors when Chuck enters.
She expresses her admiration for her niece and Charlie sees Chuck and Blair leaving.
As Blair and Chuck pull away in a limo, a puddle of oil is shown that leaked from the car.
Max calls Charlie and tells her he's leaving and that she will be living a lie for the rest of her life.
Nate realizes he's not going the right way when Blair and Chuck's limo crashes due to the paparazzi.
Serena and Dan arrive at the hospital and Nate tells them that it is pretty bad.
Charlie tells Rufus that she sent the Gossip Girl blast because she was scared that Max would do too much damage.
She says that Blair is awake and responsive but when Serena asks about Chuck, Lily is silent.