Which innovative marketing approach did Virgin Hyperloop use in 2020 to demonstrate the viability of their transportation system to potential investors and the public?

Elon Musk's Hyperloop concept represents a potential paradigm shift in transportation marketing and technology. This high-speed transportation system has generated significant buzz and investment, despite being years away from widespread implementation. Test your knowledge about the marketing strategies and product positioning that have made this theoretical transportation method one of the most talked-about innovations in the industry.

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They conducted the first passenger test with Virgin Group employees, generating global media coverage and viral social media content
They created a VR simulation experience allowing consumers to "ride" the Hyperloop at major transportation conferences
They launched a subscription-based early access program where participants could book future rides at discounted rates
They partnered with a major airline to offer combined air/Hyperloop ticketing packages for future transcontinental travel