It's a pretty long commute from the city by either train or car. If they have a shuttle from the Malvern or Paoli stop on the Paoli-Thorndale regional rail, that may be your best bet.

You don't need a car to live in Philly. I work in Ardmore (a few stops closer to the city on that line) and live in south philly and do just fine without one. Transit and walking and biking works well here. I actually used to drive to work, then the annoyance of that commute caused me to start taking the train and eventually selling my car entirely.