This whole case is weird.
If they knew each other and he knew where they lived why would they move the car to prevent them from finding where they lived?
And how did they get shot at in a different place and the shooters managed to beat them home to attack again?
If someone shot at me I wouldn't drive back home, I'd call anyone at home and tell them to lock down the house and call the police if anyone did anything suspicious and make a beeline to the nearest police station as fast as I can.
I imagine the son should be able to tell the police the location of the first shooting and they'd be able to investigate which could possible confirm or deny his version of the event.
Those bullets from that first shooting would've ended up somewhere.
Whole thing is unraveling.