It's not the end of the world. Negative prices on WTI on Monday (April 20) were a result of diminishing storage in the US, not a market meltdown. Besides, only one particular contract saw negative prices. Negative prices might come round again until we have a pickup in demand, or the US cuts its oil output. Also, it is unlikely petrol pumps will pay consumers money to fill their cars. (Recorded April 21)