From over in Chowhound Cookware:
"Yep. As of July 1, all motorists in France are required to keep two tests in their car at all times, so you can check your levels before getting behind the wheel (because, yeah, who does THAT?)
they're not writing tickets or fining anyone until November...but I figure it can't bode well to open the glovebox and have a corkscrew hanging out next to the ethylotests...."
Is this for real? Do rental cars come with this test kit?