Even with the risks (which are anyway reduced in large part by the profitable progress of the Upright access division), I imagine quite a few investors will be buying at least a few TAN shares ahead of the TNT trial outcome expected within a few weeks - because if that does include confirmation of a fleet order, the share price will surely jump.
For anyone new to this stock (arriving here after seeing it tipped for 2007 perhaps), one way of getting to grips with it, without reading 500 posts, is to click on the 'older news' link beneath the News panel in the header) and just skim through the list of headlines from 2 years ago until now - without necessarily opening many of the stories. The headline list itself is quite indicative of how much is going on. Even the sheer volume of news.