Right. The problem with a gas tax is you pay the same driving on a rural road with no one else as driving on a congested highway during rush hour. Tolls for en

Right. The problem with a gas tax is you pay the same driving on a rural road with no one else as driving on a congested highway during rush hour. Tolls for entering/leaving the city at certain times (or outright bans for some percentage of cars per day) is more effective.