Amid climate change concern, GM rolls out big new Chevy SUVs

Global concerns about climate change are not stopping General Motors from making large SUVs for U.S. drivers. GM rolled out the next generation of its big truck-based SUVs with more space and features. They're also heavier with only a small improvement in gas mileage. The 2021 Chevrolet Tahoe and Suburban will come out in the middle of next year.

They'll be longer and weigh more, because customer research showed a need for more interior space. But environmentalists say GM and other automakers spend billions on advertising to convince people to buy the thirsty and highly profitable trucks and SUVs.

All of the new features will add 50 to 200 pounds, depending on options, to the SUVs, yet GM insists that mileage will get incrementally better. For example, the 2020 version of a two-wheel-drive Tahoe with the same engine and transmission got the same city mileage but improved by one mpg on the highway.