Women and men are probably more-or-less equally emotional, but because men are more likely to be in positions of power (for other reasons), we tend to feel their wrath more when they’re upset than we do when a woman is.

They could each be on the vertices of a tetrahedron for all we know…

I feel like ‘total mass being moved’ is irrelevent if most of that mass is useless (car motor/metal frame/plastic/etc).

Even if a car motor was more efficient per kg, most of the work is wasted on moving the actual car itself, regardless of the passengers & cargo.

Bikes clearly use less energy to displace ‘useful mass’ than a car, so they are more efficient in that sense.

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