Because they bought a Tesla with only cameras on it.

Admitting this would be admitting their Tesla will never be self driving.

I bought mine with cameras and a radar, which they then deprecated and left an unused. Even though autopilot was better when it had radar. Then I realized that this thing would never be self-driving and that its CEO was throwing nazi salutes. Cut my losses and got rid of it. Gotta admit defeat sometimes.

Add a tow hitch to Waymos and any car can be autonomous!