That would have been fun.... we should plan something on purpose one day... I didn't even think about it, but I had to work that night anyway and we got lost because the GPS couldn't find the place. It was worth the trouble though.... what a fun vacuum. I still haven't really played with it because the filter is drying.
Symon, I soaked the filter in bleach water.... I don't know if you're supposed to or not, but I did. The clean out flap is there on mine, so that's a good thing!