Only liquid fuel barrels are allowed for vehicles. You cannot fill up cars, tanks, or boats with coal, wood, or solid fuel
Small changes concerning balance, gameplay, or graphics.
Transportation of the player, be it vehicles or teleporters.
Considering the first barrel of fuel is precious perhaps add the following mods as recommended mods.
https://mods.factorio.com/mod/vehicles-retain-fuel-when-picked-up
or
https://mods.factorio.com/mod/no-vehicle-pickup
That's a good point, thanks!
