Seems in line with the data here as well: https://www.bts.gov/content/gasoline-hybrid-and-electric-vehicle-sales https://www.bts.gov/content/gasoline-hybrid-an

Seems in line with the data here as well: https://www.bts.gov/content/gasoline-hybrid-and-electric-vehicle-sales https://www.bts.gov/content/gasoline-hybrid-and-electric-veh... ...I would think this data is from vehicle registration data, and not sampled from owner surveys (or the like).