no bump mapping would have to be off to get the new tarmac, i dont use bump mapping as it doesnt like working with AA.
RAzTahZ i dont know if it will effect you PO, that will depend on your graphic card, for me i had to turn AA down from 6x to 4x and i ended up with the same po. i think its the tarmac map which causes this hit with aa.
to enable AA in the graphics config there should be a lin near the start that says something about multisampling, values canbe from 2 to 16. i tyink 2 = 2xAA, 4=4xAA, 8= 6xAA and 16 = 8x AA. or you could just enable in drivers which will override this setting.