Marissa Mayer may have a big new job, but that's not keeping her from a sideline as a Silicon Valley investor.

The newly minted Yahoo CEO just joined some other high-profile investors on a series A funding round for car-sharing start-up Getaround--her first investment since leaving Google, VentureBeat reports.

Mayer has already put money into several other prominent start-ups, including Square, Airtime, and OneKingsLane.

Mayer first approached Getaround last year at a TechCrunch Disrupt competition in which the company took first place, company co-founder Jessica Scorpio told VentureBeat. Mayer was apparently impressed by Getaround’s hardware--the so-called CarKit, which allows cars to be unlocked via smartphone.

The $13.9 million funding round, which Getaround says will help it expand into new markets, was led by Menlo Ventures. Other investors include Google chairman Eric Schmidt's Innovation Endeavors, and Hollywood heartthrob turned savvy tech investor Ashton Kutcher.

“Our investors want to disrupt transportation as much as we do,” Scorpio told VentureBeat. “There are way too many cars on the planet.”