Investing in Nikola is a bet that it won't run out of cash.Nikola (NKLA -6.74%) has an aggressive vision to create a network of hydrogen production and fueling infrastructure for the fuel cell electric heavy-duty trucks it has been building and selling. The company has focused on a niche use case for short-haul trucking needs near port facilities in North America.While it has made admirable progress with its plans, headwinds for the business have been growing. That has increased fear among investors that th ...