It isn't that people don't want to drive in Philly, it's that they don't need to.
Driving in Philly is actually easy. Yes you have to accept that there's going to be a stop sign almost every block, so driving isn't necessarily that fast, but outside of the few blocks around our linear central business district, driving is really easy in much of the city. People driving into the city hate it because the transition from urban highway to urban street grid is problematic, and because they tend to drive in for events which attract numerous other drivers, but otherwise driving really isn't a problem.
