Women have higher net worths than men in the 35-65 range, which is where most people consider luxury cars. This is because divorce favors women, and men die much younger. Rest assured of parity, while there is a wage gap, women get it in the end and are much more influential in the power structure than is readily apparent.

The safety issue is the only reason I can see. Going to a public charge is a big safety risk. Even at high end malls I've seen some sketchy stuff. Women fear violence from men more than getting in a car crash for sure.

This could be irrational, but many gas stations have full service still. I use it myself at night when I can.