I posted this on facebook, then a couple episodes later found out about this. I'm new to the podcast, so have been listening since episode one in order. Which is why this comment is very, very late..
Super Mario Brothers and the bumper car style transit. That's, like, about the only thing in the movie that makes any sense, right? I mean, in that dimension, or whatever it is, there was no extinction level event. No extinction level event means no fossil fuels. No fossil fuels means no gasoline, oil, etc. Of course the cars would be electric.