I used this a few times in Chicago. Always found it was easier to use mass transit to get around in town, and cheaper to use legacy renters for longer trips to see the family (100mi+ roundtrip). I assumed they would benefit grocery gap neighborhoods, but cars tended to cluster in places with high competition & logistical substitutes.

Is their service more commonly used inter-city in Europe? I always thought intra-city driving was more of a hassle than in the states.