The companies didn't announce any timelines, but Toyota could be setting the stage for future vehicle announcements, be it EVs or gas-powered cars.

Toyota will test Waymo in a city it built near Mount Fuji. The "Woven City" is complete with streets and housing to prove Waymo's artificial intelligence.

While all that sounds very tentative, it boils down to this: Waymo has the self-driving tech, and Toyota has the cars. Sometime down the line, the two companies might start selling Toyota-built cars with Waymo's autonomous driving technology to end users.