It sounds as if they're aiming to let each vehicle to a single paying customer almost all of the time, and in countries where the hourly cost of maintenance is low. Not like those scooters, which spend most of their time waiting on street corners in high-cost countries.
The $6 may well be the yearly price for a fleet of ≥5, expressed in a marketing-friendly way.
That doesn't seem that outrageous that these can be viable - especially if there's a future secondary market for them.
Leased cars would logically depreciate much faster too considering people won't look after them as if their own. A car worth 30k would most likely be about 15-20k after end of third year; but company would've made 36x200=$7,200 excluding any upkeep costs!
The only explanation must be what we are sold for 30k must cost something like 5k at the factory for these companies to be viable.
Guessing they are maybe keeping the federal/state incentives for themselves?
There is no way the owner makes any profit from that for 30k+ USD car.
Another side income is data (every movement is being tracked by GPS) and pretty insane fees regarding traffic tickets, accidents and whatnot.