I have a domestic 10.30 am flight from JFK to SF this Tuesday so will be heading to the airport during peak traffic hours....My wife and I have one medium size suitcase each and are staying close to Newport Path station . Is it best to per book a car service instead of lugging around suitcases through peak hors trains?. I know the trains would be a much cheaper option ...any ideas how much the car service would cost?.....any recommendations? what would traffic conditions be like? How early would we need to leave to account for traffic?