New York (CNN Business) Bill Gates co-founded America's most valuable company and has become one of the world's leading philanthropists. But Tesla CEO Elon Musk finds him "underwhelming."

In a tweet Tuesday morning, Musk dissed Gates after the Microsoft founder mentioned in a recent interview that he had bought an electric Porsche Taycan , rather than a Tesla.

My conversations with Gates have been underwhelming tbh — Elon Musk (@elonmusk) February 18, 2020

Tesla TSLA In the interview with Marques Brownlee on YouTube , Gates offered a great deal of praise for electric vehicles and for. "Passenger cars is actually one of the most hopeful [sectors]" when it comes to making the changes necessary to reduce greenhouse gases and battle climate change," he said.

"Certainly Tesla, if you had to name one company that helped drive that, it's them," he said.

And he said he's enjoying his new electric Porsche.

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