A bundle of useful info from The Pocket Guide to Transportation – from the U.S. Department of Transportation.
Hybrid vehicle sales dropping since 2007:
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But car and light-truck sales are rebounding. Note, however, the overall decline in car sales that started around 1985 (partly because SUVs were classified as light trucks in order to get around overall emission requirements).
“Production” is not the same as “sales”
I once bought a new car that turned out to have been sitting in a field for a long time