Twice now our hybrid van has shut down while driving on the highway. It is a very scary experience as the car was both times at highway speed and it just turns off. This is while the car is operating on gasoline and there is no warning at all. The dealership is now being helpful but on the first incident the dealer said we were doing something wrong and not charging it correctly. It took a lot for us to convince them that there is something wrong with the car but they still haven't repaired it and it has been at the shop for over a month! Hopefully someone will figure out what makes the car shut off!? It really takes the fun out of driving!