Is there such a thing as a car potty?

[oblong]

Vaguely think I've seen one somewhere - but may have been dreaming it. Anyone come across a potty that looks like a car (or indeed any other vehicle)?

Unless you can drive a duck I haven't seen one

theres one on ebay: cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=26269&item=4367522229&rd=1

there is one right here