One fun aspect of Apple's moon shots is tracing back tech dependencies, which they often ship earlier permutations of for years in mainstream products (see: M1). In the case of Apple Car that will include computational image capture¹, sensor fusion², lidar³, and now the R1 SPU (Sensor Processing Unit) used in Apple Vision. What else?
¹ https://www.apple.com/newsroom/2021/01/shot-on-iphone-12-por... ² https://developer.apple.com/documentation/coremotion/cmmotio... ³ https://www.apple.com/pl/newsroom/2020/03/apple-unveils-new-...