Former President Trump at rally.
Scott Olson/Getty Images
- Donald Trump mistakenly called Elon Musk by the wrong name at a rally on Saturday.
- The former president referred to the SpaceX CEO as "Leon" during a speech in Wisconsin.
- It comes after Trump's former biographer said he was "hyper-aware" people were picking up on his apparent mental lapses.
Former president Donald Trump mistakenly called Elon Musk by the wrong name at a rally in Wisconsin on Saturday.