Hmm that's odd, though there are some issues with audio and OpenAL on some sound cards. Can you try updating your audio drivers?
I have an onboard soundcard and used
this to update. However for other games it's working well.
Same thing keeps happening.
The truck didn't glitch for now but it often worked well previously too. The lamborghini keeps glitching, first I thought it flipping around pretty crazily after hitting a small stone (not sure if that's a problem of the model or sth else - it flips around way too much) but after restarting and just driving slow for a few meters, parking and pressing enter the same thing happens. I also noticed that it reacted to me pressing w after exiting the vehicle as it gave gas that moment (however it didn't react to pressing s/break). If that's of any use I could record some noise it's making.
Here's a screenshot of the console while this happened:
I think adding a new option for disabling sound at all or for vehicles would temporarily solve this problem and be of much use for people who want to listen to music while playing instead of the drowning voice of some car.