But you said you bought oil futures. How would being able to take delivery of a few barrels of oil possibly help to run your car?
You haven’t seen my garage.
Seriously, it’s not futures...it’s an index that (more or less) tracks the price of oil...but it trades like a stock. They index managers have to deal with the futures and have to remember to sell them prior to delivery and then buy the next round, or they’ll have a Superfund site at their office.