Editor's note: An earlier version of this story overstated Ryder Ventures' role in Gatik's funding round.
Driverless operations. Deployment plans. Funding infusions. As the year nears a close, the self-driving truck industry is gaining momentum. Many companies notched major technical and business-related milestones in recent months.
Here's a look at what each company has done in 2021, and where they stand heading into next year.