Ok. What would you lot do.

[J R Hartley]

So you'd be happy if he blacked out at the wheel possibly causing the death of others?

The guy clearly has some kind of medical issue. He'd rather potentially place others in danger than get treatment - the problem could be anything from blood pressure to heart issues. Reporting him could force him to get that treatment, which could save his own life.

Another doctor!

Could just be the guy having one too many drinks for all you know