Waymo will test their self-driving cars this summer in Philadelphia and New York as the company preps for further expansion of its rideshare services.

Philadelphia is one of more than 10 cities where human autonomous-technology experts will be taking Waymos on summer “road trips,” allowing the cars “to get to know the city,” spokesperson Sandy Karp said in a statement. The testing fleets are closed to the public.

Waymo's autonomous vehicles are hitting the streets of Philadelphia, but don't expect to hail one just yet. Find out what this "road trip" means for the future of self-driving cars in the city.