LAWRENCE, Kan. -- The Kansas Highway Patrol continued on Wednesday to investigate Saturday's deadly accident that killed the driver of a semi when he slammed into a toll booth on I-70.
His passenger, Roman lyaich, 25, had to be cut from the cab and was flown to the hospital.
The company that hired Sergiy Angelchev, 30, of Colorado, said it appears Angelchev fell asleep at the wheel.
According to the Lawrence-Journal World, Angelchev had apparently driven 955 miles in two days. FOX 4's Robert Townsend called Eastern Freight Solutions of Colorado and an employee said the company had no comment.
According to Roman's girlfriend, Anna Zlotnikova, Roman and Sergiy left Aurora, Colo. on Monday, March 24, for a cross -country trip in the semi.
On Saturday morning at about 3:00 a.m., the semi crashed into the toll booth near Tonganoxie.
"He left me this weird voicemail at 1:00 a.m., saying that he was just kind of waking up, that he loves me," said Anna.
She says he is the love of her life, and that the world needs him to recover.
In a news conference on Wednesday, Roman's father wiped away tears and asked, through a translator, for prayers for his son.
They remain at Roman's bedside, hoping for his recovery at the University of Kansas Hospital. He remained in critical condition Wednesday evening.
"He would do anything and everything for his loved ones, for his friends, even people he barely knew. He was truly amazing," said Anna.
Earlier coverage: One killed when semi crashes into Kansas Turnpike tollbooth