In America, Uber will even supply lease cars to people who drive for them or so my brother in California told me.

As an aside, my Land Rover will take 4 people and their suitcases no problem!

Also, my Toyota Alphard Hybrid would make a very fuel efficient Uber car, with room for 4 adults and luggage or 7 adults and no luggage. Has similar Hybrid to gen 1 Prius with the added benefit of an additional electric motor driving the rear wheels to provide 4WD if needed on poor surfaces etc.