Here's the problem. When moving from a stand-still in slow moving traffic, after reaching about 20mph and coming off the gas pedal, the rpm suddenly drops then shoots back up causing the car to shoot forward. Sometimes I jam on the brakes because it feels like I'm going to hit the car infront of me. Also, when going slowly uphill, the rpm goes down too low causing the car to feel like it has a manaul transmission and is about to stall. Of course this doesn't happen when you take it to the dealer. Anyone else having a similar problem? Again, I only feel these things in traffic.