is petroleum based engines the best/cheapest man could have invented?

3 Responses to “is petroleum based engines the best/cheapest man could have invented?”

  1. bungee Says:

    no but you do the best you can with what you have at the time

  2. E.S.Kimo Says:

    Probably not, it’s not a very efficient device at best, a typical car engine is only 25% efficient, and it has changed very little since it’s invention (despite car manufacturers claims). 75% of the petrol that you burn goes to produce heat, noise, friction etc. none of which is used as propulsion. But until something better comes along, we are stuck with it.

  3. John B Says:

    So far it’s the only kind that consumers are willing to buy in any significant numbers. Supply and demand is the name of the game. Markets rule. Always have. Always will.