From his LinkedIn profile:
If Jungwirth was indeed working on “Project Titan”, his leaving isn’t likely to make the team short-staffed considering recent reports asserting that Apple tripled the size of the development team by adding 1,200 employees to the program.
When working at Mercedes, Jungwirth was leading the company’s “connected car” effort. Apple recently hired another engineer with a similar experience in fleet management of connected cars and digital license plates.
Mark Gurman contributed to this report.