so. In america, if you hit someone because you are sleep deprived you will get the same sentence. There was a report on it on 60 minutes a few months ago. Someone got 8 days in jail for accidentally killing someone because he fell asleep at the wheel.
People pick on drunk drivers. There are about 30 things you can do to make your driving ability shitty, getting drunk is the only one that is recognized by the law however.