I think that the big motor companies are just waking up to a new business model.
For years now, people tend not to "buy" a car, but rather get it on some sort of leasing deal, which allows them to roll over to a new model and just keep paying. This is actually more profitable for the auto manufacturers than the traditional purchase route, and it offers them the chance to provide additional services.
I still think that we will move to some sort of subscription based package; you'll pay based upon what type of vehicle you want to use, when you tend to use it, the locations, and how long you want to wait for a car. Those that don't want to wait pay more; if you can wait half an hour, you'll pay less.
It will probably be linked to some sort of mobile technology, either through phone app or similar. The prospective user will request the vehicle, and it will be dispatched either from a holding location, or after having dropped off a previous customer. Having completed the journey, it will then either park or go to another job.
The key advantages; fewer cars on the road, more efficient use of those that are. They will also get maintained and valeted on a set cycle, so should be kept in better condition. The motor companies will probably do deals with 3rd party maintenance companies, so there is the opportunity for smaller businesses to get involved.
I still think my £50 bet is looking OK!