Is Nikola's Downfall the End of Competition for Tesla's Semi? 

With the recent news about Nikola Motor potentially heading towards bankruptcy, it raises some interesting questions about the future of electric and hydrogen-powered vehicles. How do you think this will impact Tesla's position in the market, especially with the upcoming Tesla Semi? Do you believe that competition is essential for innovation in the EV space, or do you think Tesla's dominance could stifle new entrants? Additionally, what are your thoughts on the sustainability of hydrogen as a fuel source compared to battery electric vehicles? Let's discuss!