We need to stop thinking of this like a disaster that's suddenly going to happen. There's no magic date where the climate is going to be "destroyed". What's going to happen is the climate is going to change, and much of our way of life and infra-structure is going to suffer because of that. We can't "destroy" the climate, we can only make it harder on ourselves and have to do a lot of work to adapt. But there's not exactly an armageddon that's going to unfold. Food production is going to be harder, and the places to grow crops are going to shift.
The article itself is a little silly. Climate scientists don't debate whether global warming is real, and human caused. But they DO debate like hell about what's going to happen, how much carbon is "too much", etc. So to make any decisions about "30 more years" or making some silly prediction about everyone living like Americans in just 20 years is incredibly stupid, and counter-productive. Those issues are FAR from settled, unlike the clarity that the article presents.
As far as wants and needs, that'll be settled like it always has, through cost. It's already happening. The SUV craze of the 90s through the 2000s is already on the wane. Gas is more expensive and is going to remain so for a while, and that gas-guzzling Suburban is not only expensive to fuel, it makes you look like a bit of a pig now. People in European countries aren't somehow more altruistic, and care about others more than the US (and therefore drive smaller cars), it's just that gasoline is quite expensive, and the streets are smaller. So the giant car thing is totally impractical. Eventually Americans are going to start driving smaller cars just like they do in much of Europe.