I know everyone likes to compare the Model S to the 7-series and S-class, but I just don't really get it. The Model S starts at $70k ($60k with rebate). The 7-series starts at $81k. The S-class starts at $95k. The 7-series and S-class are considerably more luxurious than a Model S. The build quality, material quality, and just overall creature-comforts are not anywhere near luxury car standards in a Model S. So why is it being compared to them?
The 7-series and S-class are both 10 inches longer than the Model S. Strictly based on size, it's a lot more similar to a 5-series or an E-class.
So the cheaper, less luxurious, smaller Model S is outselling the more expensive, more luxurious, bigger luxury cars? Ok...
I'm not taking anything away from Tesla, it's still quite an accomplishment, but the comparison is simply not apples to apples.