Investigators don't know if Randy Haynes was hit or run off the road, but they do know a silver van is their only clue.
It was on the side of I-90 on a windy September day that Shaila Haynes held her husband's hand one final time.
"I was able to hold his hand and be right next to him," she said.
The two had been married for 24 years.
"I wish he would have said something, anything," she said.
But Randy said nothing. He fell in and out of consciousness as he was airlifted to the hospital. There, he took his final breath.
"He was taken away way too soon," said Shaila.
Randy's Harley lay in a ditch, almost unrecognizable.
"There was no indication he was hit," said Shaila.
The Washington State Patrol says witnesses saw a silver minivan make a sudden lane change. The van may have forced Randy, an experienced motorcyclist, off the road. Randy was thrown off his bike.
"This was not a rider error. Somebody did this to my husband, and (we) need to find out who," said Shaila.
Shaila and Randy spent countless weekends on the open road. In fact, on any other day, she would have been on the back of that bike by her husband's side.
"I can't believe he's gone," she said.
A month has passed since the crash, and investigators have come up empty-handed. They are calling the incident a hit-and0run fatality until they can gather more information.
In the meantime, Shaila has a message for anyone who may know more about the crash: "Hope your conscience will guide you in the right direction."