While my attempts at cardstock fall far short of other work I've seen, I still enjoy working with Thom and Dave's material. I just wrapped up the construction trailer and a self-designed hot dog restaurant using mostly cardstock textures. If you're interested:
http://blacktop-crossing.blogspot.com/

Nice work! I've thought about combing textures with molded windows. Looks like you can pull it off nicely!

Nice job. It looks great. I aspire to reach the abilities of many modelers I see on here. What a fun hobby.