store oil in rail tank cars? and rail tank car biz linkwould not be surprised to see rail tank cars in demand to store oil
oil at 0$/ barrel
0$ x 700 barrels per tank car at $500 lease per month over two years
gives you $12000 / 700 = $17.15 to store one barrel for 2 years.
I'm sure you can sell 1 barrel of oil over $20 two years from now.
It's probably more than that, of course. Anyway, it's a useful back of the envelope metric.
useful detailed discussion of the rail tank car market:
https://www.spglobal.com/_assets/documents/ratings/research/2310895.pdf