Wow... that's pretty crazy; I'm glad you're OK!
When my parents lived in Phoenix back in the 1990s, my stepdad was driving to the grocery, minding his own business... when I bullet smashed through the passenger side window and exited through the open driver's side window. Nobody was hurt.
As best anyone could determine, the bullet came from a shot fired in a nearby apartment complex parking lot. Could have ended very badly.
Oh man, that's scary stuff right there! Here in Cleveland there are parts of town where that sort of thing happens on a way too frequent basis. There are always stories of children being killed by stray bullets just because they happened to be in the wrong place at the wrong time.
I'm glad your stepdad was not hurt. Do you know if there was any follow up? Did he report it to the police? Was anyone arrested?