Most of us on here drive like 'cock ends' from time to time... so you got to ask yourself if it was you what would you be thinking...
personally.. if i drove like that and ended up putting a person in a wheel chair for the rest of their life then 5years in prison would be getting off lightly!!!
As said this wasnt the nob heads first serious accident... most people after the first would take it as a wake up call but ....