The car was pushed 500m down the track by the 0546 First Great Western service between Exeter and Paddington. The car driver was killed but no one on board the train was injured.
Emergency crews are hoping to move the train back to the crossing within the hour to allow the 45 passengers to disembark.
More top news
Our correspondent Seth Conway reflects on a harsh defeat for the Exeter Chiefs but argues they can still qualify in the Champions Cup.
The locker key was found on the body of Southampton man who died when the Titanic went down
Dry and bright with sunny spells but windy. Rain coming in tonight.