Fact check: Elon Musk says his Houston flood tunnel idea will work. Experts say that’s misleading.

A couple weeks ago, we broke the news that Elon Musk has been quietly lobbying Texas officials to let him build flood mitigation tunnels under Houston. Weeks before publication, we gave him multiple chances to respond. He didn't. We published.

Later, he posted a defense on X. So, we fact checked him. Read it here. https://www.kut.org/energy-environment/2025-09-12/fact-checking-elon-musk-response-boring-houston-tunnels