Its a '35 airstream torpedo, plan built airstream that just has a really sweet shape.
the original plans have been posted in a few places now, although I'm not sure one would want to build them that way anymore...
This is my 2nd favorite trailer design
Kamperbob - yup
following the theory, just have to pull out the cheech "we don't need no steeeeenkin" every now and then lol - other than a cooler I can't think of anything I'd want to put up there...