Cars are tools. Tools to go to work, tools to go to play, for most people. They don't buy them to remind them to be efficient. That's a very luxurious attitude which the majority of the population cannot afford.
Interesting take. I view it as the opposite. Taking efficiency into account isn't a luxurious approach. It's more of a frugal approach.
A luxurious approach would be to just throw more energy at the problem and use 33kWh worth of gasoline to go 20 miles, etc... Or another way to look at it would be "let's just mortgage our granchildrens' future as a convenience".