Experts in the field of accident reconstruction representing both the state and the defense testified in the trial of Gilbert Sullaway, 44, on Thursday.
Sullaway was charged with criminally negligent homicide after he struck and killed a San Antonio couple as they rode their tandem bicycle on Highway 16 north of Helotes on Oct. 1, 2009.
Alexandra Bruehler, 36, was killed instantly. Her husband Gregory Bruehler, 42, died a few hours later.
Charles Ruble, an accident reconstruction expert testifying for the defense, showed the jury video he produced.
He said it refutes the state’s earlier testimony that Sullaway was going nearly 80 mph when his truck swerved onto the shoulder of the highway and struck the couple.
Referring to his video, Ruble said, “I’m doing 20 to 25 miles an hour -- closer to 20.”
He added, “I couldn’t hit 25 before I almost lost it. That’s as fast as I could go out there.”
If he is found guilty, Sullaway is facing a maximum sentence of 10 years in prison.
Testimony will continue on Friday in Judge Angus McGinty’s 144th District Court.