[IanCal]

I actually find the cost of renting cars makes a decent amount of sense for me, given how infrequently I use them. However, it's such a hassle, since I've got to go quite out of the way to where they're kept and I can only return them at inconvenient times (or I have to rent for two days because they're not open at the weekend, for example).

Being able to book one to use for a journey then let it go home would be great.

[prostoalex]

Yeah, agree on that. Some rental places don't mind delivering the car to you, e.g. https://www.hertz.com/rentacar/productservice/index.jsp?targ... and I vaguely remember some startup car rental place advertising just that.

Important to note that currently it's the Uber and Lyft drivers that are subsidizing the cost of getting the car to you - they are not getting paid for the miles driven. Whether or not this cost will be subsidized by Uber/Lyft in the future remains to be seen.