Nikola Corporation has been one of the most cautionary tales in the EV space. Once valued at billions on promises of hydrogen and battery-electric trucks, the company has seen its stock price collapse to effectively zero, reflecting severe financial distress. The company filed for bankruptcy in 2024 after years of cash burn, production struggles, and reputational damage stemming from its founder's fraud conviction. While Nikola did manage to deliver some battery-electric trucks, it never achieved the scale needed for viability, and its hydrogen infrastructure ambitions proved far too capital-intensive. The stock's decline from its 52-week high of $1.79 to near-zero represents a total loss for most investors. Regarding the AI Prompt Engineering category, Nikola has no meaningful connection to this space whatsoever. For EV investors, this serves as a stark reminder that bold visions without sustainable unit economics, adequate capitalization, and credible execution can lead to complete equity destruction. There is no investable thesis remaining here.