Driverless rideshare service Waymo, owned by Google parent Alphabet, deployed its fleet to New York City this week to begin mapping out the city roads – with humans still sitting behind the wheel while they await a change in state law to allow fully driverless riding.

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.

Waymo said Wednesday it has applied for a permit to test its autonomous vehicles in New York City, the Alphabet company’s first step in a sticky regulatory process to bring its robotaxis to U.S.’s largest city.