Late last month, Tesla's executives spun up the rumor mill amidst plummeting sales and financial hardship, revealing that the Elon Musk-led company was "gearing up for a super cool demo" of the company's long-awaited next-generation Roadster. Two weeks earlier, the billionaire CEO teased a "most epic demo ever by end of year," without elaborating any further. While we can only speculate what they're about to show off, chances are it could be related to Musk's years-long promise of a "SpaceX package" that could allow the rumored Roadster to "fly" and accelerate at even more ludicrous speeds thanks to cold gas […]