Hey, it's so cool it uses a pattern but gets harder & harder as you go through! It's more of a test-track but as a race-track it would certainly be worth a shot. At nearly 7.5km it's 41 laps long but at 210 minutes estimating time to finish it's well above the 120 minute maximum (each lap takes about three & half minutes) although to be fair the Polyphony 001 appears to be faster than the cars on F1'06 (hitting 350km was not particularly difficult on the straight) suggesting that F1 cars have slowed down even when setting up the Renault R26, Ferrari 248 or McLaren-Mercedes MP4-20 you never truly could get beyond 340km/h! Still, I'd love to race on Complex String someday!