This is the third time it has happened in the past 6 months.

My father-in-law is about 60 years old and in very good shape.
He visits the doctor very regularly and doesn't have any serious health issues at all.

About 6 months ago, he was driving during the middle of the day. He took a sip of soda and the next thing he knew, he was in a cornfield. He said, afterward, that he remembered starting to choke on the coke...Then he woke up in the field.

After this, about 6 months passed with no recurrences of this, or anything similar.

2 weeks ago, he was driving through town in the morning. He took another sip of soda (he likes soda), and the next thing he knew, he was in someone's front yard. He had crashed into their car in their driveway. He says he remembered choking again and then waking up in their front yard.

He went to the doctor and they couldn't find anything wrong.
3 days ago, the exact same thing happened...
Driving>>>sip of soda>>>cornfield.

All 3 times in broad daylight
all 3 times taking a drink of soda
all 3 times feeling a choking sensation
all 3 times passing out and wrecking.

Any ideas??? Doctor and wife won't let him drive and I don't think he is going to listen to them.
We have to find out what is wrong.

Thank you so much!!!