You guys are all forgetting something important:

Even if DNNA was willing to release their mission-critical core codebase to a select few (I suspect they're not), it would require a significant amount of work and a large chunk of support time from the people who wrote it. Releasing a piece of internal code isn't as simple as zipping up a directory and emailing it to someone.

Right now, the Cambridge guys are busy working on Rio's core business... portables. I don't think they've got the time to do that kind of thing.

I think the best we can hope for is that their new manager follows in Rob's footsteps and lets them occasionally have a "pizza night" and do bugfix passes on the carplayer 3.0 code.