May 7 (Reuters) - Nikola missed Wall Street expectations for quarterly revenue on Tuesday, as the electric truck maker delivered fewer hydrogen fuel cell trucks amid an uncertain macroeconomic outlook and reduced spending by customers.

The company reported revenue of $7.5 million, missing expectations of $15.8 million, according to LSEG data. (Reporting by Zaheer Kachwala in Bengaluru; Editing by Arun Koyyur)