Robert Malsch, the driver who hit Ey, fled the scene following the car crash. Police later apprehended Malsch and charged him with vehicular homicide and a felony hit-and-run.
Kelley Piering, Ey's girlfriend, told Kiro TV that he'd described the HoloLens as "the coolest thing ever."
"It's looking at the future while holding the present," she added. "Mike said it wasn't perfect but it was going to be one day."