Today’s post is the fourth and final one in our series written by college students. Each has done a great job in sharing with us how they are using their summer, not as a vacation, but as a way to serve God. At the bottom of this post, there are links to each of the previous three posts in case you missed any of them. This final post comes from Colton Shannon, who maintains a Tumblr site that you can read here. Enjoy his post. ————————————————— As Joe and I pushed my gas emptied car down an off ramp of freeway 41, it dawned on me that our adventure was…