It's an okay nickname. The association with Bernie Sanders might get a couple of jokes about the name, but other than that, it's average. Nothing special.
Bernard Charles "Bernie" Ecclestone is a British business magnate. He was the chief executive of the Formula One Group, which manages Formula One and controls the commercial rights to the sport, and part-owns Delta Topco, the ultimate parent company of the Formula One Group. As such, he is generally considered an authoritative voice in Formula One racing and is most commonly described in tabloid journalism as "F1 Supremo".