When I was living in dc there was this service by Mercedes I think? I forget the name, that let you rent a car hourly and you didn’t have to pay for gas or insu

When I was living in dc there was this service by Mercedes I think? I forget the name, that let you rent a car hourly and you didn’t have to pay for gas or insurance but you couldn’t leave the dc area. Worked great on the one or two occasions I needed it. Wish this was more common. I think zipcar is around but I never seem to be able to work out logistics for my needs