car

CAR: "That guy's in the New York car. If you fuck with him, you'll have to deal with all of them."

A car is a group of prisoners who ride together on the yard if anything jumps off. In prison it's all about your allies. You can be in a car based on your race, geographical affiliation, or what gang you're in.

“I see some NY guys on the block and the shot caller found out I’m solid and from NY and invited me to ride in their (prison)car”