I was driving in a highway.. going about 65-70 at around 3000-3500 rpms.. after driving like this for about 5 minutes, the car started to shake crazily.. it was kinda wierd and freaky so i let off the gas and it stopped.. whenever i gave it any gas or tried to pass 3k - 3.5k rpms, the insane shaking would start up again..(notcool) after about 5-10 minutes it stopped.. i thought at the time that this was the infamous hesitation, because, it seems like the car is literally hesitating 9275983 times in a matter of like seconds.. with the shaking and not going any faster.. but i asked some people and they said the shaking is not normal and that it wasnt hesitation.. somebody told me that it might be my spark plugs.. i have no clue as to what this could be.. hrm.. now that i think about it.. the shaking was almost similar to the shaking that happens when you get wheel hop.. just not as intense but it was quite insane.. anybody have any ideas? thanks..