SpaceX (MCT) speculation

What do we know about the Mars Colony Transport? Other than that Elon declines to say what MCT stands for. Perhaps: My Cutie Talulah?

Elon is a practical guy trying to do something difficult. It's seems Elon intends to keep costs down going from three steps to mars to only two steps which avoids the many fueling launches my reference mission requires...

• Launch vehicle: 7m+ diameter, 150mt+ payload, methane Raptor engines.
• Transport Lander (MCT): Under ten crew directly to the surface of mars.

Musk states:

"All future vehicles will be reusable."

"The energy cost of methane is the lowest and it has a slight Isp advantage over Kerosene, and it does not have the pain in the ass factor that hydrogen has."

Regarding MCT:

"I think you could land with the entire thing."

He also mentions somewhere (can't find it now) that interior space should be roomy to avoid crew insanity. This would also come in handy for using the mars atmosphere to slow it down during part of it's landing (on superdracos for touchdown.)

Finally, this is why Musk is a winner:

"We really did not know what we were doing."

He learns and adapts and will be teaching us all what is possible.

80,000 on mars at $500k each seems like back of the envelope calculations. Here are mine:

Falcon Heavy: 50 mt. for $125m, so then Falcon XX: 150 mt. for about $375m. amortized over several flights as all future vehicles will be (if only even partially) reusable. Let's suppose the FXX launches MCT with ten crew on board directly to mars. Update: Or perhaps the SFalconLS?

If those ten are paying customer at $500k that's only $5m? I still don't see how Elon intends charge only $500k even with reusability. Say the MCT cost the same as the FXX. So now we have ten on mars for $750m. Add supplies prelocated on mars so we've got a mission for the bargain price of one billion or $100m per colonists.

This is the same price as I put for my reference mission, but is simpler because they don't have to meet with landers in mars orbit. Well, they don't in mine either, but it increases the cost to take the landers with them rather than taking a less expensive route to mars orbit first.

So the MCT is sort of like my idea for a stretch Dragon?  Hmmm... SD has 16 to LEO on a FH. With FXX they go all the way. That comes to $62.5m per person.