Waymo kicked off two “road trips” to Philadelphia and New York City on Monday, signaling the Alphabet-owned company’s push to expand into cities in the Northeast.

State of play: Waymo began deploying a fleet of cars with a human driver in Philly this week. Yes, but: You can't hail one. The fleet is closed to the public as the company develops its autonomous driving technology and familiarizes itself with the city.

The autonomous vehicle company says it will have a fleet in the city this summer, but the cars won't be available for ride-hailing.