A 21-year-old man remained in critical condition Friday, the day after being ejected from his car as it rolled on Interstate 80 near Wendover.
The Utah Highway Patrol said the man was not wearing his seat belt and was ejected when his eastbound silver Honda Civic went off the left side of the road, over-corrected and rolled several times.
He was flown by medical helicopter University Hospital in Salt Lake City.
UHP did not release the man's identity.
No other vehicles or people were involved in the 11:50 a.m. Thursday crash 13 miles east of the Utah-Nevada border.