I needed a car at CDG and heard good reviews from Parisiens about Le Cab. So I booked the service and it was perfect. If you book the low end, it is a Peugeot 508 which is a good sized sedan. There was an iPad in the back if you needed internet access. From a customer standpoint it works pretty much like Uber, but the locals here say it is better.

The cost for a ride into the center of Paris, including tax, was a fixed price of €47.99.