I don't know if anyone did mention this in the earlier thread about the motorcycles used to support the Tour de France, but Kawasaki has had an exclusive contract with the Tour organizers for something like 20 years. Those are mostly Kawasaki bikes.
I also heard today that France has a regulation that limits motorcycle HP to 100hp. Bummer.
Watching the Tour today I was focusing on the camera bikes - I can't imagine piloting a motorcycle like mine down the Alps @ 50-60mph trying to stay safely in front of the bicycles and get good TV pictures on some of those descents. Bicycles CAN blow down those mountains faster than cars or bikes at times. On long descents in the mountains of Greece this summer I was catching the cars on the switchbacks (they were dropping me on the straightaways). But I didn't have the entire road to work with and I wasn't hammering like a pro bike racer (mostly just coasting downhill).
No motorcycle cameras, no good tour coverage. Very crucial to bringing the bike race to a global TV audience.