Nikola had no choice but to sue the company and terminate the agreement. The CEO kept discussing the game changing tech even after the deal fell through, presumably in a bid to keep the intrigue alive. Nikola's YouTube channel has a video showing off one of these proprietary inverters running in full steam. At first sight, the whole thing does seem legit. However, according to Hindenburg, this inverter doesn't belong to Nikola. Instead, they claim that the company simply bought this inverter from a third-party supplier and put masking tape on the front to hide the name of the manufacturer.