Refueling an 1/8 scale gasser would most likely be the same as it is now. but I could see a 1 way valve (like what is used in NASCAR or F1) being used instead of the flappy lid used now mainly because there's gonna end up being that one person who is dumb enough to light themselves on fire, most likely self induced, and blaming it on the hobby in some sort of dumbass 'tarded way like..."I was trying to prevent any fuel from dripping into the dirt and contaminating the environment, so I took what I learned in my 7th grade physical education class and tried to use a lighter to burn it away...can I have my tin foil helmet back now? The aliens are reading my thoughts..."