I was told by a friend that instead of building a one car garage, I should get a Pre-Fab Shed to house my car. He told me that it would be cheaper! I do not know what a pre-fab shed is-i live in Indiana & apparently,Indiana does not know either. He hails from Connecticut & says that there are a lot of these there! I only need a one car garage! What are pre-fab sheds-Where do you get them & are they cheaper than building a one car garage?