I think you should carefully consider the pros and cons of driving "early". You do need to allow the cut muscles to reattach and heal properly to avoid complications. Having said that, I was in a position where I had to drive one week after my C/S. I guess you have to weigh up the risks of driving vs not driving.

I think the suggestion to start teaching your 2 year old to climb into her car seat now is a great one (maybe easier said than done) but anything you can do in advance to help your healing afterwards is a good thing, IMO.