Why would you think you couldn't purchase the car you like? I'm sure Ford, Chevy, Chrysler, Toyota etc. will sell all kinds of cars. They will more than likely be more friendly to the environment than the cars of today or yesterday, but I seriously doubt the notion that the big bad govenment will all force us to drive the same kind of car.
Why wouldn't you be able to build the house the way you want? If you wish to live in a cardboard box, I seriously doubt the big bad government will force you to live in an ultra modern mansion.
I also seriously doubt there will be any sort of limits to travel by the big bad government. At least not as many limits as the Patriot Act put on us.
As long as manufacturers keep making the crap they produce, I don't forsee the big bad government stopping you from spending your hard earned money on that crap. Unless of course it had been deemed to be dangerous. And I see no problem with governmental consumer protection from those manufacturers that don't give a dung our safety as long as they can get rich.