Thats true. But given that they dont pay for traditional advertising, I'm not sure why you are saying that they are aiming for a bigger market than Mercedes Benz. Do you think more people of the appropriate income bracket have heard of Mercedes Benz, or Tesla?

So by virtue of giving your product a "feature" you've necessarily engaged in marketing? Sometimes people broaden definitions to such a degree they completely neuter the word.

Choosing which features to offer in which products absolutely falls into the widely accepted definition of "marketing." In fact, market segmentation is one of the most fundamental marketing strategies, and market segmentation is essentially just the practice of choosing a specific set of target customers and building features specifically for them.