RE: Going to dealer ... all 08 owners read this *Getting Lawyer*
You can't exactly get it Lemon lawed in 2 seconds...you need to have the car in the shop at least three times for the same major problem...I can see your dad's concern though for safety reasons.....sounds like either the PCM may have a problem and need to be reflashed or perhaps there is a problem with the "drive by wire" electronic throttle linkage. Take it to service, insist they check it over with a fine tooth comb. You could also call Chrysler on this one to ensure they look the car over good....if you were to wreck and get injured because of this then they'd potentially have a pretty big lawsuit on their hands.
just my 2 cents