They might be in transition with their name. Great West Vans has two problems. First, an Alabama company can barely trade on "great west" and secondly, adding trailers doesn't exactly jive with "van".
Then maybe they two are keeping their options open to market cutaway chassis again as they once did with their Titan. Sterling is not a bad name to use. After the iPod and iPhone, Apple changed their official name from Apple Computer, Inc. to just Apple, Inc. Dayton Hudson Corp. officially changed their name to Target, Inc. after divesting all their department stores (Dayton's, Hudson's, Mervyn's and Marshall Fields).