We originally were considering using the load job methods, but gave up after having trouble getting the MediaUpload part to work. It looks like the MediaInMemoryUpload class is deprecated, and the docs we found were lacking on what is needed. I'll look through the example, but we might not be able to get a fully tested version out inn time for the 0.14 release.

By the way, has Google put any thought into how we might be able to test the to_gbq methods without requiring API acccess?