Man has understood the vital interest he had in developing the means to go fast, long and far; for this purpose, he enslaved animals to his use, he acquired science, in particular mechanical science, and he used it to employ at his pleasure, or almost, some of the different forms of energy , like heat, electricity, chemical affinity.

Quite recently (less than 50 years ago), understanding the imperfection of his own limbs, he endowed them with mobile mechanisms, he put cycles, devices formed of 2 or 3 wheels between the legs. and of a few light and simple organs, with which he has prodigiously increased the extent of his movements without the help of external energy.

He thus achieved 370 kilometers in 12 hours (cyclist Cadolle), and even 45,764 kilometers (record of cyclist Bouhours), while excellent athletes, on their limbs, did not achieve, at most, at the same time of 12 hours than the already very high distances of 113 kilometers (walker 5o Hibbird) or ikh kilometers (rowell runner)....

What man did for himself he can do it for animals, or at least for some of them; There is a way to increase the efficiency of their limbs by the intercalation, between these limbs and the field of motion, of mechanical devices receiving the reciprocating motion of the limbs, transforming it into continuous rotary motion, and ending in rotating parts; and the result obtained can be used to make animals move man faster and farther than has hitherto been done by using them.

The system essentially has three basic settings. In traffic, it has a "Drive Slow" option, while highway use necessitates the "Drive Fast" setting. When the car is stopped, but the driver still wants to exercise, there’s a "No Drive" option, which disengages the pedals from the throttle.