Agreed, would be great to have it in Paris!

Having said that, many people (including me and many that I know) use the car service on arrival, but never on departure. The times where the airlines want to pick you up from your home or office are ridiculously early, for instance with EK from downtown Geneva it's 3.5 hours before departure and I would assume Air France does something similar. Same in Paris (or even more, don't remember). When I go on my own I leave downtown one hour before when I don't have luggage (99.9% of my travel, even for longhaul), which is perfectly sufficient. Add 20-30 minutes when having to check in luggage. What do the airlines want us to do during all that time at the airport, watch the paint dry on the walls?