Testimony from a Bexar County Medical Examiner’s Office physician marked the end of the presentation of the state’s evidence in the trial of Gilbert John Sullaway on Wednesday.
Sullaway, 44, is accused of criminally negligent homicide.
Investigators said on the morning of Oct. 1, 2009, his pickup veered onto the shoulder of Highway 16 north of Helotes, killing Gregory Bruehler, 42, and Bruehler’s 36-year-old wife, Alexandra.
The couple was riding their tandem bicycle southbound on Highway 16/Bandera Road when they were struck from behind.
According to the medical examiner’s report, Alexandra Bruehler died instantly.
“Most immediately fatal would be the internal decapitation," Dr. Elizabeth Peacock testified as she described the woman’s injuries.
She also suffered a severed spine, lacerated heart and had every rib broken.
Her husband died a few hours later.
Both died from “multiple traumatic injuries,” according to Peacock. She ruled that the medical cause of death was accidental.
But prosecutors say legally it was criminally negligent homicide.
The indictment alleges that Sullaway was speeding, driving on the shoulder out of his lane and failed to maintain a proper lookout.
If he is convicted, Sullaway is facing a maximum punishment of 10 years in prison.
Testimony will continue of Thursday in Judge Angus McGinty’s 144th District Court.