Ngl this sounds much worse than normal public transportation. AFAIK it's just the same thing but if you're rich you get special treatment. Imo more of a regression than an advance.
You get special treatment when you are rich already now. It's more advanced and optimal version of what there is now.
Right now if you are rich you can just hire a driver and a luxury car, and be much more wasteful with your resources, so I don't see the difference in terms of inequality.
Cars were largely a mistake.