They're selling a lot of Camaros, not a lot of Volts. Americans don't want electric cars, they don't want hybrids. And therein lies the problem. When you have a bunch of "green" folks in charge in Washington, and those people own your company, you have to make what they tell you to make. And if the public won't buy your product? Easy, just ask Washington to boost gas by $1.00 to FORCE people into the cars you need to sell.
Having the government in charge of the auto industry is why the "Supercar" failed back in the 1990's. The auto manufacturers realized they would be at the mercy of Washington if they did what they (Clinton/Gore) wanted, so the entire project fell through, costing billions of dollars.
The "Supercar" was a fascinating story back in the 1990's. Take a few minutes to read this.