it sort of just veers onto the side of the road and stops. no movement possible. let me see if i can get a vid of it in a bit

Happened to me too. But I managed to get out of it by resizing the window. My guess is that when the game takes control, you have it let go when it reaches its destination, but for some reason it doesn't in full screen. You can't turn or move forward while it's locked.

Overall, game's pretty rough, but I liked the final moments where you see all the other desperate last moments frozen in time.