Codenamed Titan, the project reportedly dates back to themid-2010sor perhaps even earlier depending on who you believe.
Yet another rumor claimed Apple had scrapped the car idea entirely and was instead focusing onself-driving software.
According to SAE International, Level 2 autonomy involves steering and brake / acceleration support.

A full Level 5 system can drive in all conditions without any human input.
At this point, it seems to be full speed ahead but plans could always change.
Image credit:Ralph,InstaWalli