Depending on the car, gas is probably between about 20% and a third of a car's operating costs (which are typically in the 30 cent to 60 cent per mile range). Although there are a few vehicle costs, like excise taxes, that are more or less independent of distance driven, most car expenses will scale with mileage--especially in regions where rust isn't a major issue.

- Uber/Lyft would cost about $5k/year for me, and I live about 4 miles from work.

- Bus $360/year, but it would take 60-90 minutes vs 10 via car.

- Cab $7k/year

By the time you add grocery trips, recreational drives, vacations, etc cars make a shit-ton of sense. Not only does a car save money, but it saves time and provides flexibility. There's a reason our entire society is organized around cars.