Don't the higher end car brands in your area do pickup/return service? BMW picks my car up from the office parking garage, changes oil or tires and returns it before the end of the day. All I have to do is pick a day in their online portal and leave the keys at he reception desk.

I very much prefer owning a car over renting because I can leave things in the car. Like child seats, but also extra clothes, diapers, a phone charger, some snacks etc.