Big jump in US EV/PHEV sales

As always, the source of the base data is InsideEVs for EV/PHEV sales and the St Louis Fed for car sales.  I have seasonally adjusted the underlying data, using my variant of the NBER's X-11 program.  InsideEvs is having trouble estimating EV sales because some manufacturers now refuse to split out EV/PHEV sales (presumably because it's too embarrassing), so they haven't yet provided an update for global EV sales (although I now have better data for total global car sales, including data for 2017). So I haven't updated the global charts. 

On a seasonally adjusted basis (there's seasonal strength in November/December and weakness in January/February) US EV/PHEV sales are growing strongly, as is their percentage of total car sales.  The growth slowdown in 2017 while the market waited for the production ramp up the Tesla Model 3 and the new Nissan Leaf is well and truly over.