Hi BTW.  Never properly introduced myself.  I'm Sirblech on Game Center. 

Racing in the Accolade Open at Melbourne in the final series in an R8 Ultra, I was passing a 10th place GT2 M3 and it had a white triangle over it pointing down.  When I passed it, the triangle was over the distance meter.  I had no friends to beat either.  I've been playing on an off for over a year now and I've never seen it before.  Has anyone one else seen it and if so, do you know what it is or means?