the other morning i got and my mom needed some **** at the store so i went out and started the car up and everything went fine....normally when i drive it when its cold in the winter (motor cold i mean) it will take a lil more effort to drive, clutchwise (more gas needed and clutch needs to be slipped more) so i normally start it 5 min before i leave for school to avoid that and it works fine....well after i go through the stupid clutching for 5 min or so, the car warms up and shifts like a charm, but about 20 minutes later, i got the wierdest feeling ever.....in any gear whether it be accelerating, or crusing in a gear, the car lil give a little bit of a lurch at random times...sometimes in bursts, sometimes just once.....so i came home and went out for the rest of the day w/ my buddies not thinking much of it....well i get back and i had told my dad what happened so he took it for a ride, and nothing happened to him....so i took it out and nothing happened either.....well i've pretty much thought i was gone, but then it happened this afternoon...not as bad as before, but still annoying...i thought it might be the clutch slipping, but my dad said he didnt think so cause i'd smell burnt clutch, among other symptoms....any clues on what this could be??