It's actually a problem for those of us that actually use their garage for parking, as opposed to storing more junk. Most 2-car garages are around 20x20 or usable parking space or less. Even newer houses skimp on garages, because it doesn't count for square footage, and you don't really notice when it's empty.

2 modern cars, especially a mid-sized SUV or minivan, aren't going to work well with 20' of width. Even the length is problematic for clearance and being able to open the back liftgate with the garage door(s) down. A large SUV or pickup, forget it.