So, Saudi Arabia's futuristic megacity project might be taking a sharp turn. And Elon Musk, the chief of Tesla, Inc. (TSLA) and SpaceX, seems to have noticed.

Musk responded with a single word—"Interesting"—to a post on X claiming Saudi Arabia could ditch plans for 'The Line,' its proposed 170-kilometer linear city, and instead turn the massive project into an AI data-center hub. The post, shared by prediction market platform Polymarket, quickly gained traction online and drew Musk's brief reaction, which pretty much sums up how unusual the idea sounds.

From Sci-Fi City to AI Infrastructure?

'The Line' is at the center of Saudi Arabia's $500 billion NEOM development, a futuristic project designed to reshape the kingdom's economy beyond oil. But now there's speculation that parts of it could pivot toward AI infrastructure. That's not entirely out of left field—it fits into a broader trend where countries are racing to build massive computing capacity to support artificial intelligence. Saudi Arabia has already started investing heavily in that ecosystem.

Big Tech Already Has a Foot in the Door

Several major U.S. tech companies are already tied to Saudi Arabia's AI push. Nvidia Corp (NVDA) is supplying 18,000 Blackwell AI chips for a 500-megawatt Saudi data-center project linked to the state-backed AI company Humain—one of the largest AI infrastructure deployments announced in the region.

Meanwhile, Amazon.com Inc's (AMZN) cloud division AWS has committed more than $5.3 billion to build a new cloud and data-center region in Saudi Arabia expected to come online in 2026.

Alphabet Inc. (GOOG) is also involved. Google Cloud and Saudi Arabia's Public Investment Fund previously announced plans for a $10 billion AI hub in the kingdom aimed at accelerating artificial-intelligence development.

There have also been AI-chip supply deals involving Advanced Micro Devices, Inc. (AMD), underscoring how the country is positioning itself as a major buyer of AI computing power.

For now, Musk's single-word reaction offered little insight into what he thinks the potential pivot might mean. But it underscores the scale of the idea: transforming one of the world's most ambitious urban megaprojects into a massive hub for the infrastructure powering artificial intelligence.