I didn't notice that about the lines. I imagine there has to be some graphic cutbacks simply because of how large the map is...despite all of the 360's power. I only had time to watch it once before coming to work. Crappy NT computer at work won't play squat.
He did say something in the video about the graphics being turned down...or something like that. Either way, this game is about game play for me. I love the idea behind it...just don't like how your car takes no collision damage, only AI cars.
If they were to merge PGR3 and TDU then you would have the ultimate driving game.