No duplicate IP Addresses that I can find.
And death usually doesn’t like to be cheated.
So from what I gather, the driver of the other car “swerved” at the Mustang causing it to crash? Still, if the Mustang did NOT pass the other vehicles someone would still be alive today and someone would not be critically injured.
What it boils down to is someone screwed up. When you screw up, you have to pay the consequences of your actions - such as going to jail. Loved one or not - a speeding Mustang killed someone.