But you´ve got to take into account that Europe, in general, has a far more advanced public transport system. I´m currently staying in a town 30 miles from London. I can be in the centre of London in just over an hour; no parking problems, no traffic jams, for just $11-12. I can buy a weekly bus pass which gives me unlimited bus travel in the town for just $28.
Maintaining a car costs, probably, $500 a month, taking into account taxes, insurance, petrol, etc., so for many, public transport is way more efficient.
However, there´s nothing like the phenomenal connection of Interstates and the comfort of driving down them!