George Scheuering of Ramseur, who has diabetes, said his granddaughter Anna, who he had given driving lessons, insisted on taking the driver's seat when he began feeling dizzy and faint during a drive through the mountains of West Virginia with the girl and her brother Zak, WGHP-TV, Greensboro, S.C., reported Wednesday.
"So we got halfway up the mountain and I told him to pull over and I was gonna drive, and he let me drive," Anna said Tuesday.
Anna said she and Zak were eventually able to raise their father on their phone and he helped them find a gas station about a dozen miles away from where she began driving. The station clerk called an ambulance for Scheuering.
The grandfather, who spent six days in a hospital, said doctors told him he might have slipped into a diabetic coma if he hadn't gotten help so quickly.
Scheuering said Anna will receive her reward when she is old enough to legally drive.
"Well, when she starts high school, I told her she would have a car," he said.