Well, speaking of ..ahem..propane, I think I'll buy an adaptor and give it a shot.
One thing I like about using american propane tanks is that even the disposible Walmart variety are much more robust than the cheesy green gas (Japan, or Tiwan, or trashcanistan made). I've never seen a US one blow out in a hot car, ever.
(~Your mileage may vary, read instructions and always wear a seatbelt...)
Chip