Here's the link to an Engadget article that explains a bit more about it:

http://www.engadget.com/2014/04/16/googolplex-siri/

Thought it was a cool idea, but if it always routes you through Safari I could see it getting quite annoying with the wait time. Siri is still slow enough that I'd rather just do things myself, it's usually faster than waiting. With GoogolPlex I might have the same issue. I'll definitely give it a try though and see.

edit: wording