Microsoft’s Bill Gates and Tesla’s Elon Musk are at it again, this time over Covid-19 vaccines, with the SpaceX CEO recently overtaking Gates as the second-richest man in the world

Musk called Gates a ‘knucklehead’ who has ‘no clue’ about electric cars while Gates said he prefers to drive a Porsche and slammed Musk’s comments about the coronavirus pandemic – here’s how the feud started, and how it’s going