Hi SvenH,
I found this write up on a French site on how to get vorpx working with opentrack for full positional tracking.
As well it details how to modify the F1 2012 camera files to get a view that is not so close to the wheel when on cockpit view, he even includes a few samples in a link.
You can use Google Translate to translate the web page. Highly recommended.
http://www.entertherift.fr/article-606-tuto-f1-2012-13.html#commentpos