It's a trope I used for a cheap laugh.

https://tvtropes.org/pmwiki/pmwiki.php/Main/GirlfriendInCana...

It means I am saying something that is not very believable.

Ah, I get it now, thanks!

The model is not available yet, so Google is essentially saying "trust me bro".

US-ian joke. Close enough to plausibly visit, but the international border makes it hard to verify she exists :).