The greenest cars on the market — electric vehicles and plug-in hybrids — have attracted very few buyers so far.
But instead of scaling back, major automakers are eager to bring more battery-powered models to their showrooms.
G.M., the biggest American automaker, on Tuesday said it would begin production later this year of the Cadillac ELR, a luxury version of the Chevrolet Volt, the company’s current extended-range plug-in hybrid sedan.
Nissan, the Japanese automaker, is taking a different approach to lift sales of its all-electric Leaf sedan. Rather than turn more upscale, it will offer a new base-model Leaf that is $6,000, or 18 percent, cheaper than the current car.