Actually it's there now. I went out to the car and checked again. It was still greyed out. I was pressing this and that, and pressed sport steering. With that, track mode came to life and so did creep mode which had also previously been greyed out.Yes, the option is there with a checkered flag, but greyed out.
Selecting track mode brought up a warning including not to use on public roads. It did not return to greyed out, even when I returned steering to standard.
So there you have it, performance lite with track mode!