Battery seemed dead when returning to car in restaurant parking lot. got someone to jump it and it started up. When I started driving it gasped, paused, jerked, made noises and generally drove like it had bad gas or something like it. Had it towed to local dealer and they spent nearly two days running diagnostic tests and found nothing. It started and ran for them just fine. They tried but don't have a clue. Now I wonder if this is going to happen when I am traveling. Anyone have experience like this?