Let's not forget the propensity for humans to take the path of least resistance. Heat-energy engines and electric were all being invested in at the same time. P

Let's not forget the propensity for humans to take the path of least resistance. Heat-energy engines and electric were all being invested in at the same time. Petrochemical based fuel density along with availability and viability to produce was key. Still running into this today. Battery technology is advancing. But gas is there, it works, we know how to make it, and we know how to distribute it. We have a long way to go if we think we will convert the world to electric and eliminate oil based fuels anytime soon.