Just had a look on ebay and they seem well made. Prices are quite variable though. I'll watch this one as a reference.
http://www.ebay.co.uk/itm/Airline-Aircr ... 3f3c3c21fdTalking about 'things on wheels' I was at a food festival the other week and noticed some large oil drums fitted to a wheeled base. They had been adapted as pizza ovens to run on wood fed into the 'oven'. If you look carefully, you can see some wood sticking out the feeder - simple but effective.
[url][URL=http://s1066.photobucket.com/user/yotmon1/media/035_zps3f1f8e46.jpg.html]
[/url][/url]
"Success is going from failure to failure without a loss of enthusiasm." - Sir Winston Churchill