As a leading automotive designer, Kim worked with models 3, S, X and Y, along with Roadster V2 and Semi. Background, along with Tesla's senior engineer, along with the senior engineer of Tesla, along with Apple and other recent Tesla recruits, may point out that Apple wants to build a new car. However, extending the experience of Kimen, there is no real story to tell.
Aside from Apple Apple, Jony Ive will probably still be able to keep up with dominant design decisions. But someone trying to add ideas just as Kim's talent can be only a positive mix for Apple's future products.