This doesn't sound like an aquihire where the product usually dies and the team disperses. Sounds like a regular acquisition - ie Google wants the team to continue working on their product but have it integrated with the rest of Google.
Congrats on the team, to me it sounds like Google wants BB to become a major point of contact between Google and it's customers.
If you're a company like BufferBox, the best possible thing to happen to you would be to get acquired by another company, and Google is probably second or third best behind a company already in the logistics industry.
Logistics is hard, and I don't say that about a lot of things.