That said, you do not have a right to drive, so you do not have an inherent right to drive without a seat belt or a helmet. There are a number of situations in which the government can take away your license, significantly fewer in which they can infringe on any of your actual Constitutional rights.
Well I think the reason that those two particular things are not rights is because your use of those devices (in that manner for the helmetless) directly affects many other people in a major way. If you drive recklessly, then you can kill other people. I don't think the argument about the public (tax dollars) paying for the roads is a valid argument because otherwise you wouldn't have a right to an education since public dollars paid for the school.