Actually, the last time I rode, several days ago, my foam grips felt quite warm, like the grip heaters had been turned on. I was rolling along about 45 mph, aimed a gloved finger at the grip heater switch and just as I was about to verify that it was in the center position, heaters off, I hit a bump with the rear tire, missed the heater switch and hit the parking brake switch. Zero, zip, nada -- just kept rolling along. I knew since I was above 6 mph nothing was going to happen -- nothing did. I assume it's the VSS that prevents the parking brake from being activated. It was a one off event that I'm not going to repeat but it was reassuring to know the system performed as the manual said it would.