Here's my two car mess. I have tried to squeeze and pack as much as I can into a standard 20x19 and still be able to park two cars in. I plan on lofting the ceiling on the open side in the pictures and put in a 4 post lift to be able to store my trans/am above the 9-3 which is my daily driver. My wife's 9-7 can then have the other space.
Hopefully in the next few weeks I'll be painting the garage, and putting down a vinyl composite tile floor and of course getting the lift.
Currently have a 20'x20'x10'. Succesfully put three cars in a 2 car garage.
Stable: 2006 Saab 9-3 (commuter)
2005 Saab 9-7x (wife's car)
2000 Trans AM, 460rwhp/425rwtq, too many mods to list.