Parking is heavily subsidized in the US; spaces in cities can cost between $10,000 and $50,000, a high price to pay to house hunks of metal that don’t do anything for 95% of the day.
Who pays for this? Everyone. The cost of building all that parking is reflected in higher rents, more expensive shopping and dining, and higher costs of home-ownership. Those who don’t drive or own cars thus subsidize those who do.
The argument comes from a book called The High Cost of Free Parking.