I wouldn't try formula 1 if I were you - did it last year - OK but a bit too rough and ready - communal bathrooms etc.
try
http://www.hotel-bb.com instead
Make sure you have a sat nav you probably won't use it much but when you get causght in rush hour traffic, make a wrong turn ant a roundabout it's a life saver. Plus you can set the location when you park, put it in your pocket and wander about towns not worrying about how to find where you parked.
Now legal requirement to carry flurescent tabbards (waistcoats) in your car if you're travelling on autoroutes.
Depending on where and when you're goping remember that some parts of the autoroutes can be mindblowinly congested. The spot that jumps to mind is where the E11 runs out outside of Montpellier before hitting the E15 along the coast