i was cruising down the highway at 120 km/h, a car was speeding behind me so I wanted to get out of his way and i tried accelerating to 140 km/h to switch lanes comfortably, so to my surprise the rev stopped at a certain point and a message popped up saying "Vehicle limited to 137 km/h" So i thought it was just the cruise control acting up or something, so I turned it off... but the limit was still there, no check engine lights whatsoever. At a traffic light I decided to switch off the engine then turn it on again, I tried hitting 140, its still limited to 137 ... Help!! I dunno whats going on.. If there was an option that limits our speed like mercedes cars do, it isn't in the manual under cruise options. Whats happening?