Another Mopar Off My Bucket List - Barracuda Fastback
The animated sign that I started with was one of these. It had optional overlays for the lettering. I made my own lettering with my printer so it would be the entry sign at the track. If you click on these next links you'll see examples of them in motion. It's amazes me the things you can get nowadays. Keep in mind that these are made in scales for model railroading dioramas.