What do we consider affordable? I haven't had the time to do this, but you could take US Census data (average/median income per zip code), derive a formula for percentrage of income someone can spend on transportation, and thereby determine what affordable is.
A Model S is definitely a luxury item at this time; on the other hand, if it was self-driving, and could roll into bays to recharge all in software, with access being on-demand (Uber, with no drivers), they wouldn't be expensive. It would be the same as a company buying airplanes and selling seats on said expensive aircraft.
Maybe we're looking at Tesla wrong. They're not selling luxury cars; they're bootstrapping a mobility company by selling to the wealthy.
I would agree with this statement 100%.
Model S vs the new Corvette Stingray
https://www.youtube.com/watch?feature=player_embedded&v=VOqW...
If you need more power than that, you might as well bolt a turbine engine on your car.
"1. Build sports car
2. Use that money to build an affordable car
3. Use that money to build an even more affordable car"