I have a 08 Sebring convert with a 4 cylinder/auto with 110,000miles on it that is my winter beater. In the last 3 days it has shifted into neutral as I was driving. Both times it was under normal acceleration. Traveling about 60mph and it just goes into neutral(not the shifter,just the trans)I let up on the gas and it goes back into gear and is ok till the next time. Any ideas? I don't want to get into expensive tranny rebuilds but if it a minor problem I'll deal with it.