I definitely agree that the single is DOA. We shall see but I do think that Tesla will want to cover a similar price range as Ford which they could do w/ only dual and tri-motor options. But then I also think that Elon will not let GM keep the crown of most powerful/quickest truck so they will have a quad-motor Plaid version. Depending on how late they are they may start with the dual and tri and then introduce the quad later.
But they could abandon tri motor all together and just have:
Dual motor small pack
Dual motor large pack
Quad motor small pack (and/or non carbon sleeved motors)
Quad motor large pack (Plaid)
We shall see! Eventually