Chevrolet
In 2017, GM began testing third-generation autonomous Chevrolet Bolt EVs in San Francisco, Detroit, and Phoenix, with New York City following in early 2018—the first in the state for what will likely be a Level 4 autonomous unit. Bolt AVs are equipped with dozens of cameras and sensors, including a roof rack with lidar and laser units that spin to give a 360-degree view of the environment. The company plans to deploy autonomous Bolts for use in ride-sharing operations (as part of its Maven brand).
Ford
Ford has stated that it will bring autonomous vehicles to market in 2021. This would be a Level 4 vehicle without a steering wheel, accelerator, or brake pedal, for use in a ride-hailing service.
Nissan
ProPilot Assist is Nissan's semi-autonomous approach to help make stop-and-go driving bearable by controlling steering, acceleration, and braking. With ProPilot Assist, the driver's hands need to remain on the wheel. It's available on the 2018 Rogue SUV and Leaf EV.
Lyft
In mid-2017, ride-hailing company Lyft announced plans to build its own autonomous technology in a new lab in Palo Alto, California. The software and hardware can be integrated into a variety of vehicles; to that end, Lyft has formed partnerships with a number of companies, including General Motors, nuTonomy, Jaguar Land Rover, and Waymo. Company spokespeople have said they expect AVs to provide the majority of the company's rides in the next 5 years.
Uber & Volvo
In late 2017, Uber announced a deal to purchase 24,000 of Volvo's XC90 crossover SUVs. Intended for use in fully driverless operations (a.k.a. "robotaxis"), the 24,000 XC90s are slated to be delivered to Uber between 2019 and 2021. Volvo will equip the vehicles with its proprietary autonomous technology and sensors, and Uber will outfit the vehicles with its self-driving software. The vehicles will have the redundancy required for Level 4 autonomy.
Waymo
In spring 2017, Waymo expanded its fleet of autonomous Chrysler Pacifica plug-in hybrids by 500 additional vehicles, bringing the total to 600. It's now testing its AVs in 6 states. The extra minivans were necessary for Waymo's test project in the Phoenix area, which made rides available to the public, first with an onboard driver, then in driverless vehicles in November 2017.