Here's my 1/25 scale 1953 Buick dealer showroom, service and used cars. I've had a few of the parts and an idea in my head for over a decade. The showroom/parts building was a hardware store display I found in an antique shop. It was the correct scale, so I ripped out the guts and replaced them with showroom and parts counter photos and built the billboards from scratch. The service building is hashed together from various G-scale model train building components. The roof is actual corrugated metal. The lighting is all LED powered by AA batteries. Took quite a bit of looking to find what I wanted for the used car lot lights. An air meter and a mechanic with his arms up for posing under the lift rack are my next project. And the wife says it needs some landscaping of some kind.

Just to give you an idea of size, the whole thing is about 36" long.
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