PriusChat is on its way to Detroit!

2. No but it is optional

4. It's for searching radio stations. It's the same button as the one in your Prius. Check the AUDIO screen.

6. Correct. See the Lexus IS models if you want to know how it works

7. Yes

8. No

9. 6-way manual adjustment with optional power lumbar on leather-equipped models.

Doc Willie. See his write-up (Audio and Electronics section I believe)

Probably but I don't know how much space there is under there

No. It's a blank button or an IPA button.

We were not at the Detroit Auto Show