In Canada and other parts, it's
punch buggy.
In New Mexico, it's actually Slug-A-Bug. Most of the variant rules above are in effect, except the van rule and the dealership rule is different. Here, you just start slugging until the victim cries uncle.
My friend Sandra's family plays with her three children, and, having previously owned VWs, she knows where all the repair shops are. When she feels one of the kids is getting too "ahead on points", she will intentionally drive by one and "even the score."
This is a fun game, however, one must observe Pavel's Rules of Driving while playing.