read up on the right to repair law which is gonna be voted on in massachusetts in november, and possibly set a precedent for a federal law.
i'm trying to post the autoblog article i read a few days ago but cant find it.
anyway, it'll basically allow you to do everything youre asking for.
edit:
this is an older article about it.
http://www.autoblog.com/2012/07/11/r...are-data-with/
the story i read a few days ago must have been from another source.