I've lived without a car for most of my adult life (mid-30s now), and never owned one. In rough order of my own preferences, I've tried all of: 1.) I buy it someplace close and walk. 2.) I have larger-than-usual bags for my bicycle 3.) I order it online 4.) I pay for delivery 5.) I piggy-back with a friend who's driving to the same store and doesn't mind dropping me and my purchase off at my house. 6.) I rent a car 7.) I take it on public transit