I used to know a guy that built an automatic tracker for a 2-foot surplus microwave dish, and mounted it in his convertible...it was the absolute most geek-iest looking thing I'd ever seen, but it was kind of cool how he could drive literally anywhere and within seconds have a solid lock on a high-orbiting satellite. His site is down at the moment, there was a good photo of it, heh.
I've seen similar things done on the roof racks of RV's, and it looks a whole lot better //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif