Brooding clouds

We were in the car most of the day today as we had to travel to Spokane for some business. It is about a 3 hr drive so had a lot of time to snap photos. There were many shots that I think would have been great had we stopped but we really were not on a picture-taking trip! That was the second priority (hard to believe, but true :) so I just clicked off a few pictures as we drove. I decided this was the best one of the day...