It's not. Was an internal meeting and around 2008 Siemens also sold its entire Automotive division. Also they are the original inventors of Immobilizer feature

It's not. Was an internal meeting and around 2008 Siemens also sold its entire Automotive division. Also they are the original inventors of Immobilizer feature back in late 80's, and their code "stood" the test of time. You have no idea how much opposition you get to touch even a line of code in Automotive industry when codebase is a decade old, not to mention an entire feature. So I am not surprised this is now all over the place in all auto-makers.