I had not heard this. Do you have a source for this? Not doubting you, just would like to be able to look back at the context. Thanks!
I'm not sure if Tesla needs to go after the lower market yet. If they can sell cars with a 25% margin (like Apple did with their Macs) and can sell out their entire production run for a few years, that should give them the capital they need to move forward.
It was an indirect quote of JB Straubel, in an article describing an interview with him. At the moment I don't recall where that article appeared. He was talking about that 300 miles were what they considered the sweet spot, and that they could fit more cells into it if they wanted to (though it didn't really sound like it would be a lot more).