OHP investigators still work to find answers after Friday morning's deadly wrong-way driving accident.
The head-on collision happened just after 2 a.m. on Interstate 35 northbound near Interstate 44.
News 9 talked with a man who saw headlights headed towards him on I-44 just after 2 a.m. His wife, kids and pets were asleep in the back seat of the car.
"I saw a car coming at us in the fast lane and he was definitely not on the other side," said driver David Weaver.
Weaver and his family were headed into OKC when they saw the wrong way pickup truck.
"That was about probably ten after 2 a.m. in the morning and I looked in my rearview and saw another car and thought well at least he didn't hit them," said Weaver.
He checked into his hotel at 3 a.m. Weaver says he couldn't get the scary encounter off his mind and laid awake.
"But then we hear 4 o'clock this morning that is was a head on collision with a tractor trailer. We were just like wow we saw that. We didn't see the accident, but we saw he guy going just like that must have happened minutes after that," Weaver explained.
OHP Trooper Eric Foster said, "The pickup truck was pushed a good distance after the crash, so it was very apparent that they were both moving at highway speeds."
The truck was pushed almost 200 feet, and the driver needed to be cut from the vehicle.
They died at the scene.
The Oklahoma Highway Patrol said the pickup truck drove the wrong way for about three and a half miles. Troopers said the driver got on I-235 northbound at some point, then drove on three separate highways in the wrong direction before the crash on I-35.
Investigators are still working to find if the driver was impaired.
"By mistake going the wrong way it's very short lived, they stop on the shoulder to get turned around. When it's three miles or longer that indicates that there's something else going on," explained Trooper Foster.
Troopers are also working to identify the driver, as they had no IDs on them at the time of the crash.
OHP said wrong-way drivers, especially intoxicated ones, tend to drive in the left lane, so if someone has to be on the highways in the early hours of the morning, the safest place is in the right lane.