This mod will make you hurt if you hit the wall while driving  There is a little bug when you're driving with a bike and you drive on other surface that is sloped differently from surface you were on before. This mod just checks car speed changes. It won't have effect on missions because if you drive into red marker and car stops suddenly, you will hurt, of course 
This mod needs CLEO3 from cleo.sannybuilder.com. Put carhit.cs to CLEO folder and load your old savegame. And do NOT PM me about questions that are related more to CLEO than to my mod...
I wish you not to drink before driving!