A Tesla owner said self-driving mode got him home 'flawlessly' when he was 'probably drunk'

• The owner of a Tesla said he used Full-Self Driving mode to get him home just after Christmas.
• On Twitter Spaces, he admitted being drunk and claimed the system drove him home "flawlessly."

The owner of a Tesla said he used the car's advanced driver-assistance system called Full Self-Driving to get home on Christmas after drinking.

"I admitted the other day, I was a little bit tipsy after Christmas," the driver, whose Twitter handle is @denguyen73, said during a Twitter Spaces called "$TSLA - Musk Metldown Marathon."

"I was probably drunk," he added. "But with FSD, it drove me home, I mean, flawlessly."

"Don't do that," another user, @eriz35, said while interrupting the driver and booing him. "Please don't do that again."

Tesla's Full-Self Driving mode is beta software claiming to be a fully autonomous system, and "designed to provide more active guidance and assisted driving under your active supervision," according to the company's website. It works in conjunction with the Autopilot and Enhanced Autopilot systems tailored to freeways and highways.

The beta system has been the subject of a federal criminal investigation that began in 2021. The probe is considering whether Tesla's claim to offer "full-self driving capabilities" defrauds consumers.

California lawmakers passed a bill last year that would prevent Tesla and other car makers from using the term "full self-driving" if the regulation becomes law.

Elon Musk's company also faces another federal investigation into "phantom braking." An eight-car pileup in the San Francisco Bay Area last month was blamed on the problem, CNN reported.

The National Highway Traffic Safety Administration said it received 758 reports from Tesla owners detailing instances in which their cars suddenly and violently braked while traveling at highway speeds. These incidents often appear to occur when drivers use Tesla's Autopilot, which automatically accelerates, brakes, and steers on highways.

Tesla didn't immediately respond to a request for comment by Insider.