I don't think bicycle analogy is adequate. It seems that they are more like cars. And if we follow that analogy, it suggests that the direction of the evolution

I don't think bicycle analogy is adequate. It seems that they are more like cars. And if we follow that analogy, it suggests that the direction of the evolution will depend on whether we make our society dependent on being able to drive cars and grow fat from lack of activity or use them in a more mindful 'for purpose intended' way.