"Gaze in wonder, mortal, for I am the Djinn of the Cann!"
"The what of the can?"
"None for me, thanks, I'm supposed to be driving."
"No, foolish human! Djinn - a magical spirit imbued with the power to grant wishes! Today I'm prepared to offer you ..." -rummages through pocket- "a coffee card, a menthol lozenge, and a laser pointer with a dead battery."
"Well, really I just need some gas. I mean, that's why I had this can in my trunk to begin with."
"NAY, puny one! Why would you need mere petroleum fuel, when you have the majesty of ... hey, what are you doing with that plunger? Ack! Whatter you ... Huck! Doo! Stop doing ... Bwah! Ookka! Hernmph!"
The fuel door slams shut, followed by the engine starting with a VROOM!
"Say, that's smooth."