T008 https://github.com/transportenergy/database/blob/master/item/historical/scripts/T008.ipynb data from UNECE Passenger road vehicle fleet and rate per thousand inhabitants at 31 December by vehicle category https://w3.unece.org/PXWeb2015/pxweb/en/STAT/STAT__40-TRTRANS__03-TRRoadFleet/01_en_TRRoadTypVehR_r.px/?rxid=674effaa-3926-4d2e-9d6d-abfd7dd196b8 have obvious data error for the US after 2004 where the total veh and veh per thousand ppl dropped dramatically.  
T008 https://github.com/transportenergy/database/blob/master/item/historical/scripts/T008.ipynb
data from UNECE Passenger road vehicle fleet and rate per thousand inhabitants at 31 December by vehicle category
https://w3.unece.org/PXWeb2015/pxweb/en/STAT/STAT__40-TRTRANS__03-TRRoadFleet/01_en_TRRoadTypVehR_r.px/?rxid=674effaa-3926-4d2e-9d6d-abfd7dd196b8
have obvious data error for the US after 2004 where the total veh and veh per thousand ppl dropped dramatically.