I got this for my long road trips across the country. I also got it for my race Headwaters 30K, which is held on the first Saturday in December each year. Typically it is really cold and the runners like warming up near a fire. 
The Ranger works great for keeping warm and is easy to set up and use. Starting fires in the Ranger is easy; even on windy days. Clean up is fairly easy. It is packable for road trips and packs with all my race stuff for Headwaters 30K. I recommend it.