The Wyngate is more than just a garage, it provides extensive storage or workshop possibilities for a family that needs some more space. There is also a living area above the garage that can be used as a guest apartment or your own little sanctuary.
Architectural Designs Carriage House Plan gives you parking for 3 cars on the main floor and a fully-functioning apartment with almost sq. on the second floor. Only I'd make at least 1 of the garage bays living space too.