Once its launch in Austin, Texas, proves successful, Tesla plans to expand its robotaxi program to multiple cities. Self-driving Teslas have already been spotted on city streets with a human riding shotgun ahead of the program's official launch.

Amazon's Zoox has opened its first robotaxi serial production facility, it said on Wednesday, marking a crucial step towards launching a commercial robotaxi service that will compete with Alphabet's Waymo and Tesla.

The 220,000-square-foot robotaxi factory announced Wednesday heralds a new phase in Amazon’s push into a technological frontier that began taking shape in 2009.