system
Given the following post, respond as if you're commenting on Reddit:
human
[BTTF]When Marty drove the Delorean back to 1885, there was still a Delorean in that timeline hidden in the mine. Was the train stunt really necessary?

When Marty drove the Delorean to 1885, he ripped the fuel line and spilled all the gas so they had to rig a train to get to 88mph.   
Surely the Delorean that Doc arrived in 1885 in and hid in the mine (it would still be there) would have had some gas left in it?
gpt
Gas actually doesn't last very long before it gets really gunky.  It also releases volatile fumes that will build up over time.   For this reason the common recommendation for anyone that is putting a car into long term storage is to drain all the liquids from the car.

The lack of paved roads is another real problem.   Even with fuel getting the car up to the right speed without spinning out would be difficult.