While on a trip to Glacier National Park, I took an all-day trip through the park on one of the Red Jammer Busses. These are great vehicles for viewing the park, having removable tops to allow viewing of things all around the vehicle.

This image is a close-up of the hubcap of the Jammer I traveled on.

Jammer Hubcap is available through my online gallery, and is available in a variety of sizes.