Stallworth was drunk. So, for starters, he wasn't supposed to be behind the wheel of a car. Agree?
You said it was a busy roadway. None of the other drivers hit him. The drunk driver did though.
MH,
How would more than one person even be able to hit the man unless he was run over and the driver kept going? That part of your argument makes no sense.
Once he is hit, more than likely the driver would stop and no one else would be able to hit him anyway.