Do you find yourself using something other than gas stations to fill up your car often? I've been driving for over 7 years with 2 different cars and I can't say I've ever needed to fill up the car any other way than to use the gas station nozzle. I keep an eye on the fuel gauge as to not run out of gas on the road. Only thing I can think of that you would need the funnel for regularly enough that it's a big deal they put the funnel under the spare is if you put in additives to the gas, though I'm not real sure why on that either.