Who voted for a higher MPG limit? No one. The EPA, a gov't bureacracy, acted on previously delegated power to set new mileage goals. This being a democracy, we're free to disagree with the ends and the means.
The citizenry doesn't (often) vote for individual policies. Direct voting for everything is an interesting idea, but has its own problems.
If the gov't could do the same for cars, I'd like to see the proposal. The EPA raising the mileage standards is not even remotely similar to what the gov't did to start off the Internet boom.
Maybe a government-funded lab could do great things for car technology, but there are no guarantees in R&D.
You still haven't provided evidence that the mileage standards are attainable - only made vague unsubstantiated references to carmakers being "okay" with them.
Ugh. You're back to questioning the attainability again? Zombie arguments never die, I guess. You don't even have to RTFA for the substantiation. It's in the summary:
Last year, 13 major automakers, which together account for more than 90 percent of all vehicles sold in the United States, announced their support for the new standards."