You would possibly get the same sort of repulsion bugs as from buildings, because GVs dont just die from collisions like planes do. They're subject to the same (prolly to a minor degree but still significant) sync problems as planes: latency means extrapolation means warps, however minor. So if you happened to warp from outside to inside a GV, you'd either get stuck there or be flung off, which would make for some nastygrams for HTC.
Speaking of which, it would help your picture of things (if you need help with it) to realize that it's inherent to slower-than-light network, like the Internet is, to always be extrapolating velocity/acceleration info that's always late. You only call it a warp because those large jerks in motion seems out of the ordinary, but in fact planes and GVs are always riding the extrapolation smoothing curve. It's a testament to how well coded the game is (and I dont even say this with my pom-poms in the air) that you cant even tell that planes and GVs are actualy continualy and microscopicaly warping when you think they're not.
So while GVs shouldn't drive into each other (IIRC they used to be collideable), it's the least worst alternative right now.
