I was also very sensitive to jolts and bumps but it improved greatly until I went for a drive through a very bumpy road for about 2 hours. The sensitivity has somewhat come back. I discovered that there is something wrong with my neck as I felt some nerve getting irritated in my neck as soon as the vehicle hit a bump. Thereafter I would feel something stuck in my throat/upper neck for hours until it subsides the next morning . any thoughts what it might be ? Maybe its neck tissue injury and inflammation agitated ?