I've noticed this bug quite a while ago where if you exit MB running and your vehicle is parked in front with the tip of the back of the car barely touching the ramp, and you enter the vehicle(it mostly works on one-seated vehicles), the player hud is gone with your player and your car, and your camera just goes full rocket boosting passing through walls and stuff but always staying on the ground(you can also steer it left and right but it's going too fast). Everything returns to normal if you release the "W"/forward running button. It's pretty funny but also pretty dangerous(i once landed on the edge of a cliff and there was water below me)