Nemechek dominates, wins $100K in dramatic Martinsville Xfinity race

John Hunter Nemechek won his second Xfinity Series race of the season at Martinsville Speedway.
Nemechek's car caught fire after a burnout celebration, but he was unharmed.
Nemechek dominated the race, leading 198 of the 250 laps.
Nemechek won $100,000 in the Dash for Cash race.
The Xfinity Series next heads to Talladega Superspeedway.