More generally, people have limited capacity by how many fuel containers they own. I don't think there is a massive supply of unused jerry cans anywhere, and and in any case it would take several cans to equal a single car tank.
Sounds like a lot of work to maybe save $50, but hey... mostly fun and games (unless you barn catches fire).
Diesel generally stores better, but it can have problems with algae growth.
https://www.ricochetfuel.com/blog/dyed-diesel-fuel-vs-regula...
By UK standards, it was the middle of nowhere.