guys...i was telling my friend about my weekend expoits of keeping up with a brand new C320 on the NJ Parkway exceeding speeds of over 120...now he was like...you prob weren't doing 120...the speedo stops being accurate over 90...he said i was going like 100 even though it said much higher...now i know this was unsafe and foolish and i got a real scare when i had crazy brake fade for the tolls so i learned my lesson cause i nearly peed myself when i nearly didn't stop...but still i want to credit myself for going that fast...any thoughts??