When you supercharge the vehicle, please use some sort of wipes or gloves to handle them. There are too many rude people on this planet ruining it for us. I saw this guy at the Cupertino supercharger coughing his lungs out while using the handles, I wouldn't want to be touching that handle without any protection. He was about 6 cars from me when it happened, I would have said something if he was closer or my son is not with me.