I work from coffeeshops and such, which is inheriently flexible. I've started trying to walk or bike as much as humanly possible. It helps to have a terrible car that is frankly embarrassing to drive. I definitely feel better the days I walk a few miles.
Don't be embarrassed by a cheap or low-quality car. All that means is that you're more likely to not be paying monthly bills to pay off your car. That's a good thing to be proud of.
As long as it doesn't spew clouds of blue smoke every time you slightly press on the gas pedal. Those cars should be violently scrapped with prejudice! (and all diesel trucks too actually...)