[simondotau]

That is wrong on multiple dimensions.

What makes driving worse is the presence of more cars. This can be partially mitigated by piling money into road infrastructure, but infrastructure is a band-aid on a problem created by more people choosing to drive.

What makes driving better is the presence of fewer cars. There's really only one way to reduce the number of cars on the road: build good alternatives to driving. If you love driving, you should be the strongest champion of public transport investment.