I realize skidding off a runway isn't an unusual event. What I found to be unusual was a plane skidding off a runway onto a highway. I agree that someone suggesting that it was a laser within the first 5 minutes doesn't constitute their knowledge of plane function; however, I interpreted your post as a dismissal of any speculation, laser or not.
It's certainly not usual for 448 Alliance LLC. This is at least the third time one of their aircraft has overshot the runway..
It was incorporated in DE on 12/29/1998.