We've received a few hints about the hypothetical $25K car, and the underlying reasons why Tesla may build it. The first hint came in Elon's answer to the 1st audience question posed during the
Q&A session at the June 2018 AGM :
"Yeah, I think we'll do a compact car in less than 5 years"
Further, in his Aug 2018 interview with MKBHD,
Elon said:
if Tesla worked very hard at meeting a goal of a $25,000 car, the company may be able to "do it in three years," but there are factors which limit just how fast the vehicles can become cheaper to purchase.
Again, volume is the key to Tesla's production strategy. If Telsa can engineer a small hatchback that achieves reasonable range on a 27 KWh pack (half an SR+), and 'Maxcell' batteries further reduce 'per-KWh' cost, then this product directly threatens sales of millions of small vehicles each year in Europe and Asia (1st Tesla in India?).
Tesla needs massive scale to allow cheaper purchase prices for its vehicles. The world-wide market for the Model 2 is likely greater than 3M units per year. Tesla will not shy away from that market; indeed it is their mission.
Hints aside, what is different today? With the 2019Q2 conference call, we see that Elon now intends to either force the industry into the wholesale adoption of EVs, or Tesla will simply kill their businesses. No quarter to be given. The Corrolla's and Polo's of this world have 5 years max before they get squeezed out of the marketplace.
I suspect that "Model 2" will be prominent in
Master Plan - Part Trois (expected 2020Q1). But Elon is now convinced that other automakers and gov'ts are dragging their feet, and Tesla needs to transform the industry on its own. His plan to scale up TWh-scale battery production for the effort is the opening salvo.