Nico Rosberg, an investor in the all-electric series, thinks Formula E could one day merge with formula one.
The 2016 world champion reckons it may be easier for motor racing's top open wheeler category to simple absorb Formula E rather than establish its own 'green' credentials.
Asked by the Washington Post if he thinks Formula E will one day eclipse F1, Rosberg said: "Maybe we will never even get to that point and we will just see a merger before that.
"The step for formula one to go electric will be a big and difficult one," the German added.
McLaren refugee Stoffel Vandoorne is keeping his career alive with a move to Formula E next year.
And Rosberg thinks the time will eventually come when F1's combustion engines are completely dead.
"The advantage is that formula one and Formula E have the same owner," he said, referring to the Liberty companies headed by John Malone.
