You can't conflate overall R&D development with manufacturing and construction costs, that's a fallacy. I don't know what the exact numbers are but Tesla has de

You can't conflate overall R&D development with manufacturing and construction costs, that's a fallacy. I don't know what the exact numbers are but Tesla has definitely invested well over $100b in their supercharger networks, manufacturing facilities, and even cost per car and it will still be far less of a public good affecting far less less people directly and indirectly than a reasonable public transport network.