AA's in Spawn/Vehicles in Spawn

It is wildly infuriatingr that someone can sit in a AA vehicle in their spawn, not take damage when shot at (rockets just explode over them), but be able to damage/kill your vehicle all from the protection of their spawn.

 Either make it to where no vehicles can do damage in spawn, or we can do damage to them in spawn. CRAM is also a little OP.