It's far dumber than that. The door release was electric, and the alternator wasn't powerful enough to run everything on the vehicle. So, if you were driving at night, with your headlights, wipers, heater etc running, you'd be slowly running your battery down, until the voltage got too low to run the ignition, and the vehicle would shut off.
And you'd be trapped in a dead vehicle on the side of the road, in the dark, with no lights.
Maybe people just got sick of seeing it posted? I'd never actively seek out a Pizzacake comic, but I do point out the many shortcomings when they show up here.
Precisely.