Excerpts from abc7chicago.com:

Questions remain after a mother from Rolling Meadows and five children were killed in a fiery crash on I-90 in McHenry County Sunday. That sole survivor, 32-year-old Thomas Dobosz remains hospitalized at Loyola University Medical Center after losing his wife and all of his children in the crash.

Investigators said just after 2 a.m. Sunday, Dobosz was driving westbound on I-90 near Hampshire in a Chevy van when 22-year-old Jennifer Fernandes of Carpentersville collided with Dobosz’s vehicle head on. Both cars became totally engulfed in flames.

Troopers said they found Fernandes dead on scene as well as all of Dobosz’s passengers, identified as 31-year-old Lauren Dobosz and five children: two 13-year-old girls, 7- and 6-year-old boys, and a 5-year-old girl.

State Police are still trying to figure out why Fernandes was going the wrong way.

The fatal crash also caused another collision when a semi-truck stopped to let a medical helicopter land and a second semi rear ended it. The trailer on one of them was torn open and the boxes inside scattered on the roadway. One person had minor injuries from the second crash.