When traveling on long trips across country on my Goldwing, i always carried a gallon of gas strapped on top of one of the saddle bags...
Once on a Sportster i had, i was low on gas, but i knew of a gas station ahead in a "pass" i had to go through. What i didn't know was, it had closed up! That left me on fumes inbetween towns! Then i spotted a load of firewood on a pickup, so i looked it over and saw a chainsaw and can of gas! I looked and looked until i found the owner and bought some chainsaw gas at a VERY high price!
DM