I suspect that the person who posted the ad also managed to get a copy of the key, and showed up early to unlock the door. But that, of course, is pure speculation.

Yes, Craiggnoble, I was wondering the same thing : what can this electric mule do that a regular mule couldn't do ?

For the moment, it doesn't look like it can run faster or carry heavier charges. And it's certainly not cheaper.

Here is a link to a higher resolution picture where you can see that the dots on the girl's behind are actually little star tattoos :

http://www.unef.fr/delia2medias/deliamedia12/1285-6fe57e.gif