For 2016, 159,139 PEVs sold in the U.S. out of 17.5 million LDVs total, or .909%. Even if the fed. tax. credit doesn't get repealed, I wonder if GM will reach 200k PEVs total this year and lose it. They hit 100k in July? last year, and seem to have sold in the neighborhood of 12-13k since, so while still unlikely it's possible depending on how the Bolt does. [Edit] Looks like they;d sold 25,304 by the end of 2015, and are at 128-129k at the end of 2016, so about 72k left. If Volt sales average around 2k/month, the Bolt would need to sell about 48k in 2017 to reach the threshold. Possible, but probably unlikely.
Guy [I have lots of experience designing/selling off-grid AE systems, some using EVs but don't own one. Local trips are by foot, bike and/or rapid transit].
The 'best' is the enemy of 'good enough'. Copper shot, not Silver bullets.