If you manage to wedgee yourself into the space bewteen the Pod and the engines of the agrian Express pod, It will take you with it, out of bounds. The usual warning appears and your camera feed gets interrupted. after 30 seconds however, the camera feed cuts back to you falling back down to your demise, slowly. You will not accelerate beyond 520km/h.
Not sure if this is a real bug since you seem to be breaking intended play, what with intentionally wedging yourself between the express and the engines, but nonetheless interesting