i hope iam not incriminating my self here but , today i was travelling along the motor way and i was sittting at aroun75 -80 all the way . and there was a van right up my rear al the way since i had come on to the motor way and he was being a nuisance so when there was a break in traffic and the road ahead opened up i put the foot down . i wont say how fast i was going but i got to a speed and then the car seemed to lose its power ?? i braked gently the speedo needle got stuck for a second then dropped down again , i then felt a bit shocked so i slowed back down . i dont know what done this. does anyone know ? i was wondering if i had any thing to do with a speed limiter ? how can you tell if your car has one?