Erik
That carrier looks so good. I would think that a little Diesel in each cylinder from the spark plugs and a new battery and petrol. Turn with a crank handle, to see if the engine is free or remove all the plugs and turn on the battery.
I am sure that you could get her running.
From your photos, the track looks good and all intact.
Just get her to run with some fresh petrol and drive it out the 5 kilometres.
It would be alot of fun anyway
Pedr