too high for terrain road alignment (fixed)

I checked it shortly, it seems like at 400 m height it doesn't work correctly anymore
Open source game community & development
http://forum.freegamedev.net/
const float Len = 400; // max ray length
btVector3 from(wx,wz, Len*0.8f), to(wx,wz, -Len*1.1f); // x -z y