Level 0: is no automation whatsoever.
Level 1: is partial assistance with certain aspects of driving, like lane keep assist or adaptive cruise control.
Level 2: is a step up to systems that can take control of the vehicle in certain situations, like Tesla's Autopilot or Cadillac's Super Cruise, while still requiring the driver to pay attention. Get past that and we enter the realm of speculation:
Level 3: promises full computer control under defined conditions during a journey,
Level 4: expands that to start-to-finish autonomous tech limited only by virtual safeguards like a geofence, and
Level 5: is the total hands-off, go-anywhere-at-the-push-of-a-button experience.

Level 2 is where we are at, but it also seems highly redundant. What's the point if the driver has to be paying attention? In all likelihood, it incentivizes the driver to stop paying attention. We are at a place where the technology is either redundant or dangerous depending on the whims of the driver. I guess people are going to text and drive no matter what, so it makes that situation less dangerous? Strange times.