You need to compare apples with apples. Cars have a benefit of transportation that many people need.

'98 civics will run but they are massively outdated in terms of safety and technology. You get into an accident with 20+ year old designed and rusted metal frame, you're going to be in a world of hurt.

Designs most certainly have changed massively as well. Furthermore the poorest still don't have cars and need public transit and as I mentioned before the elderly class are on fixed or government benefits. Where would they get the money to fund even a modestly cheap robot?

Also, despite cars being 'cheaper' if hedge to inflation, the upkeep costs sure have not. i.e. insurance, tires, heck even gasoline have all gotten more expensive.

To prove a point. I bought a top of the line desktop in 2000, it cost me $1.2K. To buy the same today would cost me $3K.

Longer term, I honestly think humanoid robots and robotics in general will stay at factories and businesses. To make a robot that can do all the tasks a human can with the intuition and intelligence is currently impossible. I get your are optimistic, but currently you are basing your beliefs on hopium and not facts.