Dude this is the BEST wow
ok ok. i have a Nomad theme on all my servers and this going to be great. I have one question. how can i make it so they can only use so many modules. Maybe we can add a line that says the can use 2 of everything or 4 of everything. Just so we dont get players making 50 cars. LOL 
I'm not sure what you are asking for. You want to limit the overall number of car turrets that a player can deploy? You are using the existing mechanisms for limiting turrets per car, but players are working around it by making more cars? Sounds like the real issue may be in whatever plugin is allowing them to make unlimited cars. Addressing that is out of scope for this particular plugin.