Orem police say it happened just before 5:30 Monday morning near mile marker 273.
According to a 911 recording, the baby boy came so fast dad didn't even have time to call 911 until he was already delivered.
“How long has the baby been delivered?” asked the operator. “About five minutes,” the father replied.
The dad told the operator this is the couple’s second child and he came less than an hour after contractions started.
Both mom and baby were taken to American Fork Hospital.