If the bill passes in its current form the $7500 EV tax credit ends 12/31/2017. That’s shockingly soon for people in the market for an EV, notably all those Tesla model 3 reservation holders.
Assuming the tax plan bill even passes, I suspect the EV tax credit gets compromised back to its current state (per manufacturer, phase-out begins in 2nd calendar quarter after 200,000th EV sold in US).