TDMCars Stop players being able to use PhysGun! Help!

Hey guys, posting another question here. About 3 days ago, I found some code that allows non admins to not be able to pick up TdmCars with the physgun. Does anybody have this anymore? or knows where the topic is.
I remember this being in some kind of init file, like cl_init or just init. It was about 5-8 lines long. But whatever :L

Thanks guys in advance! I need this quick.