Exactly the same thing applies to the gas tax. This has the benefit of increasing the efficiency of vehicle commuting, which means less pollution, and less time

Exactly the same thing applies to the gas tax. This has the benefit of increasing the efficiency of vehicle commuting, which means less pollution, and less time and gas wasted sitting in traffic. Carpoolers will be taxed significantly less than single occupancy vehicles. Electric vehicles will be taxed just as much gasoline-powered ones. It is tax that charges people for the scarce public resource they use, rather than charging them for use of a private resource that acts as a proxy for use of that public resource. The biggest concern I have with it is privacy, but that could be addressed by consciously designing it to not disclose personally identifiable information (this could be done with zero-knowledge proofs).