Google doesn't find himself

There is something I find weird on Google's site.

I often use Google Maps. If I type http://www.google.be/maps/, than Google returns a 404 error page because the page doesn't exist. The correct page is http://www.google.be/maps without the '/'.

But wait a minute, if I search for anything in Google, it seems to know what I mean : "Did you mean ?" But apparently not in the case of an hazardeous Google Maps URL on their own site...

They could maybe reroute the 404 page to "I'm feeling lucky" with the url as parameter ?