It seems Bryson is epileptic, or at least had a seizure of some sort.
How would that cause him to drive away from the first accident? I can see how it caused the second one, but you'd think he wouldn't have been able to crash into a car, talk to the driver, then drive away, hitting it again, and then drive into another town.
I'm not sure, but I guess we'll see. He might have brain damage or something after this. He might also be an asshole.
http://www.epilepsy.com/101/EP101_SYMPTOMAfter-seizure symptoms (post-ictal)
Thought:
Memory loss Writing difficulty
Emotional:
Confusion Depression and sadness
Fear Frustration
Shame/Embarrassment
Physical:
Bruising
Difficulty talking
Injuries
Sleeping
Exhaustion
Headache
Nausea
Pain
Thirst
Weakness
Urge to urinate/defecate
http://health.nytimes.com/health/guides/disease/epilepsy/background.html"Slightly over half of seizures in adults are complex partial type. About 80% of these seizures originate in the temporal lobe, the part of the brain located close to the ear.
Disturbances there can result in loss of judgment, involuntary or uncontrolled behavior, or even loss of consciousness. Patients may lose consciousness briefly and appear to others as motionless with a vacant stare. Emotions can be exaggerated; some patients even appear to be drunk. After a few seconds, a patient may begin to perform repetitive movements, such as chewing or smacking of lips. Episodes usually last no more than 2 minutes. They may occur infrequently, or as often as every day. A throbbing headache may follow a complex partial seizure."
If he had a seizure it's not at all improbable that his mental state would not have been normal and his judgement would be greatly compromised.
My family had a dog that was epileptic and whenever she had a seizure she'd act strangely afterwards.