1st self-driving car that 'lets you take your eyes off the road' goes on sale in the US — and it's not a Tesla

The first "level 3" self-driving car has gone on sale in the U.S. — almost a year after Mercedes-Benz received the green light to sell vehicles fitted with its autopilot software, dubbed "Drive Pilot."

At least one level 3 autonomous vehicle has now been sold in North America, based on information from California's Department of Motor Vehicles (DMV), Fortune reported. This was among 65 vehicles for sale in the state.

All vehicles are classified according to a six-level scale developed by the Society of Automotive Engineers (SAE) — where level 0 is fully manual and level 5 is fully autonomous with zero human input required.

Most of the self-driving cars on the road today are level 1 or level 2. This means they offer "driver support" features, including automatic emergency braking, blind spot warning, lane centering and adaptive cruise control. 

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But while these support features are active, the driver remains in control of the vehicle and must constantly supervise them.

In level 3 self-driving vehicles — like cars fitted with Mercedes-Benz's Drive Pilot system — the person in the driver's seat would not actively need to drive the car while the automated driving features are engaged.