That efficiency I think is paying off. While General Motors were manufacturing and pushing large trucks and SUV's, Ford had a more diverse approach to what type of vehicles it offered. For example, the hybrid became even more popular when gas prices rose in 2008 and are rising again now. Although hybrids are made by Toyota as well, recent negative publicity has hurt their image. Recalls for the infamous sticky gas pedals is one example that hurt Toyota's image with consumers.
I also see the reverse of this scenario happen. When General markets are trending down, and that same day Ford is up, Most of the time on the very next day, general markets go up. I learned this through observation day after day of the stock markets. You start to realize that patterns emerge that can be useful in extracting stock market information and gauging public sentiment, becoming valuable information when trading the Market, giving you insights to trade on.