http://e3.g4tv.com/thefeed/blog/post...m-E3-2009.html

So that's how it works
And you get the most points by hurting people. Which might seem easy if you’re in the back of the pack, since most of the weapons in wipEout HD shoot forward, leaving those in first place to only use the mines. Except that in “Eliminator,” you can hit the L1 button, which will flip your ship around so you can blast anyone who had been behind you. Of course, this means you’re also going to wrong way, but if that’s what you have to do to hurt people, then so be it.