I have started NFS 3 days ago and got up to level 11 as of now. I own a VW Scirocco that is extremely tuned. I have all the best engines, brakes, etc. All the best parts possible on the car are put. I go at my top speed and it hits 153 mph. Everytime, it stops at 153 mph, it doesnt go any further. However on youtube, I see some people with the same car hitting a lot higher than 153 mph. Has the game changed or is it just my car?