Nice! I like the C5 too.
I'm in the process of buying a house with a building this size. It's steel like this one but arranged a little differently. It has 3 bays, and the space is wide open. The current owner walled off the first bay, but included a large sliding door, so it could be opened back up. He has a wood shop in there, and works on his vehicle in the large side. This is perfect for me, and exactly how I wanted to use the building when I found this house. The deal is going through well, and very quickly. I hope it continues to go all the way through. I am looking forward to having the home and shop. I also drive a C5, a 2001 convertible.
I realized yesterday that I joined this forum in 2005 or 6 and never posted! I was building a garage in FL at that time, then things went bad for me. OK now though, and I am in NJ now.
Again, your garage looks great thus far. I like the breezeway idea, too -- and the floors! Wow!