'Every car in France will have to be equipped with a breathalyzer from the spring of 2012. The announcement was made by President Nicolas Sarkozy in a speech on Wednesday.
The new plan will force every driver to have a breathalyzer kit in their cars so they can check their alcohol level before driving.
Anyone caught without a kit will face a €17 ($23) fine.'
Seems to me that unless the kit is somehow linked to the ignition system so that you HAVE to blow into it and if it goes red then the car is disabled until someone blows into it and achieves green the whole thing is pointless.
A drunk is not going to blow into it unless compelled to and is likely to ignore the Red if he does because he is drunk and doesn't care!
The French do love making up bizarre rules, the good thing is that they rarely try to enforce them.