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There is no pretense that a non-fossil fuel vehicle must have an energy density >= oil for it to be a viable alternative. A bicycle doesn't carry any energy at
by mikec3010 8y ago
There is no pretense that a non-fossil fuel vehicle must have an energy density >= oil for it to be a viable alternative. A bicycle doesn't carry any energy at all and yet many people use them in place of a car.
- Scea91 8y agoI am still waiting for flying bicycles. Also, why do you mention only vehicles? 87 % of ALL the energy we use comes from fossil fuels (coal + gas + oil).