Squawks right, your valid national driver's license is good for a couple of months. If you hate being checked by the police here you can take the road thru the Swiss and French Alps
... but seriously I did like the ride thru the Chamonix tunnel going to Genova then to Roma. They have very good highway system (lots of tunnels and winding roads to test your new car). Unfortunately, lots of toll in the French and Italian highways. Congrats and drive safely