If that picture cannot explain what happened today, I have no idea what can. Disappointment, sad and MAD about himself and the car.
*edit post*
Found this
part very clear about this picture
"Already in last place, an emotional Earnhardt Jr. climbed out of his car and into a chair behind the pit wall. He sat with his head down, buried in the crook of his arm, for several minutes. Teammates consoled him, crew chief Tony Eury, Jr. rubbed his shoulder. Whether it was pain, anger, frustration or all of the above, Earnhardt Jr. was a beaten man on Sunday."