The stock of Plug Power experienced a significant 7.1% surge driven by the announcement of BMW and Toyota's collaboration to mass-produce a hydrogen fuel cell car. This development indicates a growing popularity and interest in hydrogen power. While this partnership is a positive sign for Plug Power, there are some caveats to the story. The news of the collaboration was not entirely new, as it was reported by Nikkei Asia two weeks prior. New details unveiled the release date of the fuel cell electric vehicle in 2028 and BMW's innovative design to incorporate hydrogen fuel tanks. Despite these positive aspects, Plug may face challenges in generating revenue from hydrogen fuel sales to BMW owners in the near future due to the timeline of the project. The financial concerns of Plug Power, with a limited cash position and high debt, raise uncertainties about its sustainability in the long run. Investors are advised to weigh these factors before investing in Plug Power and explore alternative stock options recommended by The Motley Fool Stock Advisor team for potential returns.