"these people" are pushing for better (more efficient, sustainable, etc) technology, not less of it. Saying that "these people" are trying to take away your cars is setting up a straw man argument, plain and simple.
Second of all... have you done the math on how long it will take the human population to decrease as a result of the declining birth rate? And compare that to how quickly the carbon footprint of the middle class is rising? Do the math... then talk.
Lastly... if climate change is allowed to continue unabated then the economic impacts will affect our levels of education and technology. Look at new orleans and new york - that's billions in economic effort spent that could have been spent on tech and education.