The practical issue is there isn't a good way to determine who “needs” these vehicles and who doesn't. If we as a society want to curtail excessive use of these life-averse machines, there has to be some hurdle to separate out those who “need” from those who merely “want” one. Restrict private ownership and urban operation of them without a CDL or a contractor's license, for example. People who need to use them for that one trip per year to haul new furniture from Ikea can still rent them as needed.