Running compute nodes in cars is honestly an even dumber idea than renting out your own car as a taxi.
your car is doing nothing for most of it’s lifetime. renting it out via turo or as a taxi makes sense.
It would be worth running the numbers on this, it is more viable to just take taxi rides for a year, compared to how much would payments and potential income net from a scheme like this. Of course if it ever sees the light of the day.
A lifetime that will be massively shortened by it running as a taxi 20 hours a day.