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Left inset: Amy Dalton (El Paso County Sheriff’s Office). Right inset: Robert “Bob” Selle (Colorado Lions Camp). Background: The Colorado home of Robert “Bob” Selle, where he was allegedly hit and killed by Amy Dalton while riding a lawn mower in his front yard (Google Maps).
Tragedy struck in Colorado when a man, lovingly referred to as “grandpa,” was fatally struck while mowing his lawn by a Subaru driven by an impaired driver. His wife, witnessing the shocking incident from their home, rushed to his side as he lay on their front lawn, conversing with him in his final moments, according to police reports.
Police stated in an arrest affidavit obtained by Law&Crime that the man’s wife was watching from a window when she saw a speeding silver vehicle become airborne and collide with her husband, ejecting him from the mower.
Amy Dalton, aged 37, is accused of the fatal collision with 79-year-old Robert “Bob” Selle on August 24, 2025, outside his residence in Calhan, a town roughly 80 miles southeast of Denver. Authorities revealed that Dalton confessed to using marijuana and other drugs before the unfortunate event.
Footage from a neighbor’s security camera reportedly documented the incident, showing Dalton’s 2016 Subaru Outback veer off the road and strike Selle.
The affidavit details that “Dalton’s Subaru went airborne over the driveway,” subsequently crashing into a barbed wire fence before veering into the yard, where it tragically collided with Robert Selle, who was on his riding lawn mower.
Cops say the security footage shows “the Subaru as it’s overturning” before colliding with Selle. “The Subaru continued overturning in the field, coming to rest on its roof,” the affidavit says. “Selle was knocked from the lawn mower and came to rest on the ground near the Subaru.”
Selle was initially responsive “and talking with his wife, who witnessed the crash,” before he became unconscious and died at the scene, according to police.
“For no obvious reason at the time, Dalton failed to maintain control of the Subaru and the vehicle drifted off the right/west side of the roadway,” the affidavit alleges. “After analyzing the Subaru’s ACM [airbag control module] data, it’s clear that Dalton never applied the brakes or applied any evasive steering input in the seconds leading up to the crash.”
Cops spoke with Dalton after the crash and reported “a strong odor of marijuana coming from her,” according to the affidavit. She allegedly admitted that she “consumes marijuana daily” and takes “multiple medications,” while also confessing that she “had recently tried methamphetamine for the first time.”
Cops who interviewed Dalton said she seemed “mellow” and was “not very responsive” to EMS questions or treatment. One trooper noted afterward that her eyelids “seemed very heavy,” per the affidavit.
Dalton allegedly blamed the crash on having “two bad tires” that she claimed caused her to drive erratically.
“Dalton also explained that she thought she overcorrected but could not expand on that,” cops said. “Dalton explained that the steering began to feel ‘weird’ and ‘funny.’”
Dalton agreed to a voluntary drug test, which showed at least two substances in her system that police say contributed to the crash. She was arrested and charged with vehicular homicide, driving under the influence, reckless driving and operating a vehicle without insurance.
Selle’s obituary describes him as a “pillar” in the communities he lived in over the years, as well as a loving husband and grandfather of five.
“As condolences continue to pour in, Bob Selle is being remembered as a legacy, an inspiration, a hero, a great human being, a role model, kind, caring, generous, an amazing person, a class act, a loving husband, a teacher, a leader, a great man, one of the best, and as respect personified,” the obituary says. “And yet, of all these descriptors, his favorite one was ‘Grandpa Bob.’”
Dalton is currently out on a $10,000 bond. She is due in court for a preliminary hearing on March 17.