Tropo on your local machine

In my previous post (about scripting alternatives to VoiceXML), I wrote:

So I think the best of both worlds is to have a scripting language-based API that sits on top of a VoiceXML platform, with good support for speech recognition.

It seems that the Voxeo guys are already planning that with Tropo:

Yes, we fully plan on making the Tropo platform available for local installation. Unfortunately I do not have even a ball park guess to give you. There's a good bit of work for us to do in Tropo for a while to flesh it out properly.