My insurance said I wasn't insured for 6wks after any abdominal surgery, so maybe they are all differnt.

I think a lot of it is to do with the potential pain, sure you can sit in the driveway & push the brake hard, but if you are in the situtation where someone runs out in front of you & you have to hit the brake hard & fast you may hesitate just in case it's going to hurt.

There is also the issue of damage to yourself. As Sarah_H said you may feel ok but it doesn't mean that you are entirely healed inside. I know for myself I had pain when I vaccuumed up to three months post my caesarean's so I know that in that first 6 weeks I wouldn't want to be driving just in case I had to hit the brakes hard.