Which innovative product design approach did Tesla pioneer that fundamentally changed how cars are developed and updated?

Tesla has transformed the automotive industry with innovative product design approaches that challenge traditional vehicle development. This poll tests your knowledge about one of Tesla's unique product development strategies that significantly impacted how they designed their vehicles compared to traditional automakers. Think about how Tesla approaches the relationship between hardware and software in their product design philosophy.

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Treating cars as software platforms with over-the-air updates that continuously improve vehicle functionality post-purchase
Eliminating all physical controls in favor of touchscreens to reduce manufacturing complexity
Designing cars using crowdsourced feedback from online forums before finalizing production models
Building vehicles with modular components that owners can easily upgrade themselves at home