So long, Tony Stewart

I have to wonder about the sanctioning body of NASCAR in allowing Tony Stewart to race today while still under investigation for a "race related incident"; not my words, those are the words of the police chief of the investigating unit. If a police officer kills someone while on duty, aren't they usually taken off the street during the investigation? Don't we expect people that have concealed carry permits to have common sense and not to shoot other people arbitrarily just because they are verbally threatened; don't we usually expect there to be some type of offensive act towards the individual possessing the weapon before they are justified in drawing and discharging their weapon?

Tony Stewart is observed revving his engine, while under caution, causing the rear of his car to break loose and striking the other driver. Would the other driver had been struck if Tony Stewart had not made a choice to rev his engine, causing the rear of his car to break loose; I think not. The other driver walking towards Tony is not an offensive act when he is in a vulnerable position compared to Tony Stewart inside of a well protected race vehicle. It was a poor choice on that driver's part as well, but his action did not cause his death; Tony Stewart performed an unsafe act which caused this incident. IMHO, that was an extremely poor choice and his actions should have serious consequences. Whether Tony Stewart intended for this to happen or not is only relevant in respect to the difference between murder and manslaughter.