BMW goes for a spin on an aircraft carrier, according to AdWeek.

It’s one thing to drive at breakneck speeds around a barren salt flat or abandoned airport, but the pucker factor goes up a few notches when you’re teetering on the edge of an aircraft carrier.

In BMW’s questionably real “Ultimate Racetrack” ad for the BMW M4, we see the typical anonymous, black-gloved stunt driver fishtailing and drifting around a course built on what looks like the redesigned deck of an aircraft carrier.

Several YouTube commenters believe it’s fake, and Jalopnik points out some pretty compelling reasons to be dubious, such as the inconvenient fact that aircraft carriers don’t have rounded edges. We’ve reached out to Cundari, BMW’s agency in Canada, and will update with more information if we hear back.