Car did not go on the ground. There was a fire (might have been electrical, I'll double-check) in the car. Car was set out. Fortunately for the passengers, there was a deadheading sleeper in the consist, which was put into service.
***Update.
There was a fire in a lower-level electrical cabinet. I don't know the extent of the damage. The car was deadheaded on train 304 to Chicago the next day, and my impression is that it should be repaired in relatively short order. However, I could be wrong on that.