Federal agencies might be reluctant.
Upgrades S90 model, will build 40 series vehicles in China.
Vehicle sales fall far short of goals.
The deal covers about 475,000 Volkswagens and Audis in emissions scandal.
Drivers will never be more than 50 miles from the closest charging station.
National Highway Traffic Safety Administration wants company to hire private investigators.
Increase of 0.5 mpg linked to reducing weight on road.
New technology helps vehicles lose weight and drive more efficiently
4% drop shows the hot streak of demand has chilled.
Kyklos Bearing International LLC will begin laying off 400 workers Dec. 31.