How do you say "slow down" in French?

Auto Hebdo, a French auto magazine, recently spent a month tailing the leading French presidential candidates to see how badly they (or more accurately their chauffeurs) broke the speed limit. Ironically, Nicolas Sarkozy, who until recently served as France's top cop as Interior Minister, topped the list by going 130 kph in a 70 kph zone. For our metrically-challenged readers, that's 37.5 mph over the speed limit.

Because I graduated from college, I don't read auto magazines on a regular basis. However, I was impressed by the interesting angle the author took in this article, particularly since the French police have been cracking down on bad drivers in the last few years. I'm not sure if following a speeding French driver for journalistic purposes is such a good idea, but then again, what could possibly have gone wrong?