In the SF Bay Area of CA, Tesla seem to be everywhere!. I would love to see information on Tesla's share of existing cars on the road, as well as Tesla's share of new car registrations in areas such as CA, where Tesla support, consumer openmindedness and other factors provide a fertile market. During a 14,000-mile round-the-country, my wife and I were struck by the enormous obvious, visible difference in Tesla penetration among different states, and speculated that overall US market share disguises the fundamental appeal of Teslas to buyers where conditions are more supportive. E.g., Superchargers in CA were often near full, but in mid-America, virtually empty! Evidently this kind of data is readily available through $$ information services, but surely there are bits available through leakage??