Oil tank train cars sit idle Tuesday, April 21, 2020, in East Chicago, Ind. The world is awash in oil, there's little demand for it and we're running out of places to put it. That in a nutshell explains this week's strange and unprecedented action in the market for crude oil futures contracts, where traders essentially offered to pay someone else to deal with the oil they were due to have delivered next month. (AP Photo/Charles Rex Arbogast)
