Don't worry about oil, watch gasoline
There is a gross misconception that Tesla competes with the price of crude oil. Not really, Tesla competes with the retail price of gasoline. About $1.12/gallon has nothing to do with the price of crude; rather it is due to transportation, refining, distribution and retailing, aND taxes. These are the infrastructural costs of transforming oil into a usable substance conveniently available where you drive. This infrastructural cost will not decline with the price of oil and will generally keep the cost of gasoline above parity with charging and EV.
You may find it illuminating to compare UGA, an ETF tracking the wholesale price of gasoline (which does not include the retailing costs of diatribution, marketing and taxation, and USO, an ETF tracking the price of crude. YTD, UGA is up 12% while USO is down 14%. Or if you look at the last 5 years, UGA is up 11% and USO is down 53%. This implies that for a long time the price of wholesale gasoline has been rising 18.8% per year relative to the price of oil. This is actually a huge problem for oil producers. The cost of getting oil to market in the form of motor fuels keeps going up. Meanwhile, demand at the retail level has stagnated. Thus, oil producers would have to take a huge cut in the price of oil just to remove a little pain at the pump.
The other thing to watch is natural gas. YTD, UNG, an ETF tracking the price of natural gas, has fallen 13%, and it has fallen 77% in the last 5 years. The decline in NG has been keeping the cost of electricity down. It has put substantial price pressure on coal, driving it down about as much. KOL, an ETF tracking coal producer market cap, is down 71% over 5 years. It is worth recognizing that NG and coal have been declining faster than oil and primarily keep the cost of electricity down. In the long run, solar and wind will drive down further the cost of NG and coal. The snag that we have for electricity is that declining fuel costs are not fully passed on to retail consumer as savings. But the is the same problem with retail gasoline, as a commensurate amount of saving in crude is not being passed on to retail gasoline customers. In any case, rooftop solar gives retail ratepayers a way to bypass the cost friction of the utilities. So at least for those able to benefit from rooftop solar, the decline in the cost of solar is fully reducing the cost of charging an EV. Eventually, the utilities will have to compete by lowering their rates.
So it does not really matter if the price of crude continues to fall. The cost of coal, natural gas, wind, and solar are falling faster. The cost of gasoline is above parity with electricity, and this will continue indefinitely.