Hi Adrian,
I work in the field of Wildlife Tracking, just curious: what's your data source? We fetch it from Argos and also store locations onto App Engine.
Are you saying that you're not allowed to deploy it because you didn't get an invitation?
I haven't tried that one either, we simply build large json files containing all the locations. It's much faster for the client to sort and filter them, we're talking around 150,000 entries max.
Regards,
Emanuele