[Darkrp] Cars spawn non-nocollided how do I change?

Ok just as the title says I guess…

Basically I wanna get cars to spawn nocollided, as I am well aware the potential of them used to crash my server or anyone’s server. (Just driving it into a bunch of condensed welded props, perhaps…)

If any of you know a place in the darkrp config or my car dealer then say I guess…

hook.Add("OnEntityCreated", "VehicleNoCollideHook", function(ent)
	if ( ent:GetClass() == "prop_vehicle_jeep" ) then

Put that somewhere on the server, experiment with which collision group you want. They’re found on this page: http://wiki.garrysmod.com/page/Enums/COLLISION