Normally, repairing your car can cost hundreds of dollars. However, you can repair it for as little as $40 by convincing a girl at the strip club to take you back to her residence. Visit the club and park your vehicle in the back, where you'll hopefully be meeting the stripper shortly. Then head inside and pay $40 for a private session. If you are able to touch her (while the bouncer isn't looking) and flirt with her enough, she'll invite you back to her place. Accept the invitation and head back outside and around to the back of the building and your waiting vehicle. The stripper should be standing nearby and will get in with you if you don't pull a weapon or otherwise frighten her away. Drive to her place as indicated on the map, and a scene follows. Then you'll receive the stripper's contact info and your car will be repaired.