But US automakers did better than expected while Japanese brands did worse.
Readers write about religious bullying, why corporations should lead by example, and hydrogen cars.
But automakers are encouraged by a recent increase in showroom traffic.
In gridlocked Bangkok, a special team of cops helps women who can't quite make it to the hospital on time.
The Detroit Auto Show is in full swing, and it seems that every participant is promising a new hybrid, a gas-sipping microcar, or a fully electric vehicle.
Toyota, Honda, and BMW report declines of 30 percent or more in December.