Official posts:

Philadelphia https://waymo.com/blog/?modal=short-bringing-our-service-to-...

Balitmore https://waymo.com/blog/?modal=short-waymo-is-heading-to-balt...

Pittsburgh https://waymo.com/blog/?modal=short-waymo-coming-to-pittsbur...

St. Louis https://waymo.com/blog/?modal=short-entering-st-louis