While driving along the interstate back to Bozeman I saw this sign and had to turn around to investigate with my 4x5 camera.  I composed the shot and then waited for a semi-truck to drive through the scene. 
 
Specs: 1750 x 1168 jpg. Web-Ready digital image optimized for web sites and social media. Smaller file size for fast loading. Ideal for online use only. Not suitable for large prints.