Mr Funnel Demo Video FANTASTIC
 

Dont leave home without one of these if your going anywhere near Dodgy fuel!
they come in a variety of sizes... this is the Big one....

Mr. Funnel: Demo

Not a bad idea. I've run across these funnels before in aviation and they work a treat....I guess you'd have to make the room for it on a long trip.

That's a lot of space!