The Luxury Cruise to Mars advertisement caught my attention, I had to click on it but if you’ll notice the

www.example.com

Is not a valid domain name. Clicking on it will lead to this:

You have reached this web page by typing "example.com",
"example.net",
or "example.org" into your web browser.

These domain names are reserved for use in documentation and are not available
for registration. See RFC
2606, Section 3.

Is this Google running a test, a customer running a test.