Thirty-one cars and trucks entered the 2013 Demolition Derby at the Douglas County Fair.

photo by: Richard Gwin

A large crowd watches as the first heat of the Demolition Derby is whittled to five cars on Friday, Aug. 2, at the Douglas County Fair.

photo by: Richard Gwin

The Demolition Derby drew more than 30 cars and trucks to compete on Friday, Aug. 2, at the Douglas County Fair.

photo by: Richard Gwin

An official starts the first heat of the Demolition Derby on Friday, Aug. 2, at the Douglas County Fair.

photo by: Richard Gwin

James Hatch and his girlfriend, Crystina Gonce, both of Lawrence, wait on top of James' car for his heat to start on Friday, Aug. 2, at the Douglas County Fair.

photo by: Richard Gwin

Hank Schriner, 6, of Spring Hill rests on his father's car before the Demolition Derby on Friday, Aug. 2, at the Douglas County Fair.

photo by: Richard Gwin

Jeni Herd, Lawrence, the only female driver in the Demolition Derby, drove her 1983 Dodge Diplomat to the end of her heat on Friday, Aug. 2, at the Douglas County Fair.

photo by: Richard Gwin

Steve Gonce, Lawrence, waits for his Demolition Derby heat to start on Friday, Aug. 2, at the Douglas County Fair.

photo by: Richard Gwin

Tim Gonce, Lawrence, gets out of his car after a fire broke out during the Demolition Derby on Friday, Aug. 2, at the Douglas County Fair.

photo by: Richard Gwin

Tanner Taul, of Baldwin City, positions his car for the Demolition Derby on Friday, Aug. 2, at the Douglas County Fair.