Could you please clarify the horse-drawn cart and donkey analogy? I'm a bit confused by what you mean. Especially considering that the use of oil and gas in the future will be significantly reduced when their competitors are rechargeable batteries, or when electricity itself will be used more for long-distance driving. So, will poor people who can't afford electric vehicles return to using horses and donkeys for transportation? It will truly seem like there hasn't been any technological progress.