Unable to get in vehicles?

Well, I was fooling around a little with the gm_speedway map and a bunch of vehicles. At some point I became unable to enter vehicles, although I could start them up and their parking brake was released (they’d roll as if I were in them). I couldn’t drive them and when their starting sound stopped they were dead silent. I could also start more than one.

I’ve had this bug for a looong time, but I don’t play singleplayer much so it doesn’t bother me that much. But it is annoying.

i cant get in vehicles at all, is this just a singleplayer problem?

i’ve had gmod for three days and haven’t played online yet…

(i’ve reinstalled and fixed my no hud problem, but this didn’t change)