[jandrese]

In the US the gas tax is only covers about 20% of the road budget in most states, the rest comes from other sources like income and property taxes. Public transport however is expected to be entirely self sufficient and is held up as an example of the failure of public projects when it ends up being more expensive than driving a car if you don't account for 80% of the roads funding.

[Annatar]

That's in the U.S., but we are discussing Switzerland, not the U.S. here, and in Switzerland, the taxes private car owners pay generate huge surpluses which are then embezzled by the federal government to plug up budget holes elsewhere, as well as for subsidizing public transportation. Meanwhile, car owners in Switzerland must sit in traffic jams at least twice per day because no new roads are being built, just the existing ones maintained.