Nikola Corp's announcement of its business optimization efforts, including streamlining operations and decreasing cash spend, has led to a positive market reaction, with shares trading higher. The company's hydrogen fuel cell electric truck launch remaining on schedule for Q3 also adds to the positive sentiment, as it indicates progress in the company's core business. This news is directly related to Nikola Corp and is important for investors, as it shows the company's commitment to improving its financial position and focusing on its core business.