In 2020, Elon Musk made a promise that the Tesla Cybertruck would have the ability to “float for a while” and even act as a boat if needed. Recently, a Texas driver took Musk at his word.

A video circulating on social media shows a Tesla Cybertruck gliding along a beach in Port Aransas, Texas. The truck confidently moves towards the water, shocking the person recording the video. It then turns back onto the sand.

The identity of the driver is unclear from the video. However, most observers believe that the truck is likely undergoing late-stage testing, as the first deliveries of the Cybertruck are scheduled for November 30. Port Aransas is also just a few hours’ drive from Tesla’s Texas factory, according to Jalopnik.

The video raises questions as to whether the Cybertruck’s dip in the ocean is a publicity stunt. It’s highly unusual for an automaker to leave testing so close to the launch date.

While the video doesn’t show the Cybertruck floating as originally promised, it does demonstrate its ability to traverse through more water than a typical car. Assuming that the Cybertruck was undergoing a test, it’s unclear whether Tesla was examining salt corrosion, water intrusion, or some other factor.

With all of that said, intentionally driving a Cybertruck into the ocean is a very stupid thing to do.

Like all Tesla vehicles, the Cybertruck has an electric powertrain. Electric vehicle batteries can catch fire when exposed to saltwater. Earlier this year, a flooded Florida Tesla caught fire as crews were towing it away in the aftermath of Hurricane Idalia.

Flooding is also known to corrode electric vehicle battery packs. Electric vehicle batteries can cost up to $20,000 to replace.