He certainly practiced, by that I mean he told people about picking up a drunk girl after a big game and driving her home. I think he was probably pretending to be a taxi then. Seeing how it would work, etc.
NOT DEFENDING HIM but it seems like he did what he did to Hannah in a drunken rage, or for whatever reason he did not clean up his car. This does not sound like someone plotting a murder.
The idea that the stepdad knows alot more than he
has said to the press makes sense to me. I mean, he
told LE his son talked about Hannah.
Also, JW lived right around the corner from Yogis.
It is very possible that DM saw Lauren there.
Even if DM did it, the 5N POIs should have seen her home. And really, that's what the Spierers are saying with their civil suit, at the end of the day. IMO.
Even if that's what ends up being their legacy, it fits.
Something they will never forget, because someone died.