I've also noticed numbness more noticeable in my car(camry), vs my truck (old F150,currently down). Typi ally I drive the truck more. In my car looking for a set of anti slip pedals that fit properly. Experimenting with shoes and seat position too. Truck has a different seating position. So far very thin sole flexible shoes are best, moving my seat closer, foot slipping off gas at times lots better. Off to see cardiologist this week, next step ,find a good neurologist.