I owned a 1998 Mercury Grand Marquis until last November. In total:
$200/month for gas (7 mile daily commute, 50 mile biweekly visit, 50 mile weekend adventure, 18 mpg)
$120/month for maintenance
$50/month for insurance
$10/month for tolls
$380/month in operating expenses
The Grand Marquis broke ($5000 in repairs needed). I now own a 2008 Toyota Yaris. In total:
$100/month in gas (holy crap fuel savings!)
$18/month in maintenance (obviously not sustainable, oil changes only)
$62/month in insurance
$10/month in tolls
$190/month in operating expenses
Owning a car is the second largest expense in my monthly budget (housing is first) which is not "Blow Money". I have never had car payments, and I drive significantly less than those around me. I suspect that I am not alone in this recognition of car expense. I live in Orlando and do not pay for parking/garage fees.
I will give up my car when a robocar which can take me to/from work, on a weekend adventure, and can be insured for less than $400/month. I will do so without hesitation, as the time gains are substantial.