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
More than a thousand people have signed a petition to try to prevent a Bristol family being split apart by the Home Office.
As Hollywood hit the red carpet for the "Fury" premiere on Sunday, Brad Pitt paid tribute to his unusual co-star; a WWII tank from Dorset.
After smashing the competition in the final of the U.S Open this weekend, squash player Mohamed Elshorbagy has been made the world #1.