on a proprietary fuel stack, which it intends to have ready
from an engineering standpoint prior to 2012. Tr. vol. 1–
B, 11:18-12:6 (Weverstad, Apr. 10, 2007).
charged by plugging it into a normal electric outlet, and it
Manufacturer witnesses testified that plug-in hybrids
vehicles. See DX 2513. Specifically, General Motors an-
fuel economy is around 150 miles per gallon. The Vue is
Perhaps the most important factor affecting the different
cost estimates that Austin and Duleep reached is their
which each predicted that manufacturers would have to
in another category, due to the regulation’s fleet-averaging
improvement in fuel economy and emissions reductions