I was quite surprised, too. Maybe it was a little gift from Holden to the burnout bogans?

1. My apologies, I've confused you. CAN communications are purely internal for my system, it doesn't communicate via CAN to the car's computers.

The sensors and actuators give or accept voltage signals, and my controller inputs or outputs those accordingly. For example, the 4 speed has some pressure sensors to monitor the valve body behaviour, and I send some HI or LO voltage signals in emulation of it.

2. I do use FreeRTOS for the 407. I don't need to, since I use a super loop and all my memory is either static or allocated on the stack.