I don't know about US, but here in Europe, companies and entrepreneurs pay so called "road tax", a compulsory amount for each vehicle in their fleet. For commer

I don't know about US, but here in Europe, companies and entrepreneurs pay so called "road tax", a compulsory amount for each vehicle in their fleet. For commercial vehicles and buses, it is a pretty nice sum. That gives them right to use the roads. In this case, the Google bus is no different than other private bus or shuttle.