Info about the prius CAN bus and parking control and radar cruise?

Does anyone here know:

1. For self-parking, are commands to move the steering wheel sent over the CAN bus? Or is this isolated from the main can?

2. for the radar cruise, does the data stream from the radar unit get sent over the can bus? Has anyone tapped into this data stream?

3. Does anyone have a comprehensive list of all the can bus messages/commands for the prius III?

Thanks.

 

btw - this is for a graduate artificial intelligence project.

I found one site with some prius can messages, but it's very incomplete.

Is there a better place I should be asking this?

Thanks