I always thought "Garage Art" was a vehicle that sat in a garage all the time and never got driven.
In which case, this is my grandfather's Garage Art. A 1948 Plymouth Special Deluxe, bone stock. He puts maybe 20 miles on it a year
I borrowed it from him in the summer while my '74 Duster was stuck in the garage over a weekend (i was installing a Vinyl Top). Gotta say it was a real pleasure driving around in the old car, and I felt right at home with the manual steering, manual brakes and column shifter
It also made me want to finish restoring my '48 Dodge too.
And here's my Garage art, this thing was hogging up my Paint Booth for almost a year (just sitting in there, it was the only free/open spot i had in the garage and i wasn't about to park it outside)
And i keep stuff like this on display in the office (among other trinkets to show my mopar pride) The Owners Manual from my '76 Ramcharger and a 60's 100-300 Truck Manual (also correct for a Military WM300 Power Wagon)