Marissa Magnatta, who produces a Philadelphia radio show, tweeted the picture you see above from the parking lot at Lincoln Financial Field. The tweet came moments before the kickoff and said the fire was in Lot E. Another tweeter showed a picture of a car on fire. Speculation on Twitter was, of course, that Philadelphians had lit a Dallas fan's car on fire.
Details are still light, so let us know what you know.
UPDATE: Reports now say that the car actually belonged to an Eagles fan, and that the fire resulted from a grilling party that didn't dispose of its coals properly. (One tipster mentioned an unattended turkey fryer.) A picture from Rich:
And another from Al:
Car Fire in Parking Lot Outside Lincoln Financial Field [Crossing Broad]
Car on fire in parking lot before Eagles-Cowboys game? [Philly.com]