system
Given the following post, respond as if you're commenting on Reddit:
human
[Zombieland] Seriously. where they hell are they getting gasoline, how is the electrical grid getting powered, the bullets, the everything?
gpt
Of the three, I’d say bullets would be the least problematic. The apocalypse happens pretty rapidly so less time for people to panic buy, hoard or waste too much ammo. There should be an abundance of bullets available in abandoned stores, homes, logistics centres and Army/National Guard/Naval/Air bases. 

Gasoline starts ‘going bad’ pretty quickly. Some say as little as 6 months but probably a little longer if you’re not concerned with peak performance or if it’s going to knacker your engine with prolonged use. However, as Zombieland 2 takes place aroun 5 or 6 years after the first movie running a monster truck on stored gasoline seems a stretch (I guess it could have been converted to some other fuel source…maybe). 

Electricity from the grid seems far fetched. Even assuming nuclear power stations or hydro-electric, without maintenance they’d either shut themselves down or fail (possibly spectacularly).