Waymo has completed a US$5.6 billion funding round to enhance its robotaxi services in major US cities.

The investment comes from existing backers such as Andreessen Horowitz, Fidelity, and Silver Lake, along with Alphabet, Waymo’s parent company.

This latest round increases Waymo’s total funding to more than US$11 billion. Previous funding amounts to US$3.2 billion and US$2.5 billion were also raised.

Waymo’s services are operational in cities like Los Angeles, San Francisco, and Phoenix.  The company has recently partnered with Uber to extend its reach to Austin and Atlanta.