AS motor tricks go, this one was pretty spectacular. Although, it is hard to imagine the drivers clogged in traffic behind this abandoned 16-wheeler in the baking heat will have seen it that way. Incredible pictures have emerged of a huge truck trailer balancing precariously on a highway sign in Houston at almost a 90 degree angle. Perched ironically beside a road sign warning truck drivers from veering into the outside lane, the vehicle somehow remains aloft, like a dog on its hind legs. While providing the opportunity for incredible pictures, drivers stuck behind the cargo trailer must have tired of the seen pretty quickly. The crash caused widespread road closures in the area as workers battled through the day and night to clear the vehicle and remove the damaged sign. Agencies