Grasshopper cycle

I thought this was discussed or documented somewhere in the bakery, but I've been unable to find evidence of it.

If it turns out that this idea has been posted I'll delete this unless there's sufficient engineering difference to warrant this remaining as a legitimate variant.

Resembling the lovechild of a mountain bike and a robotic grasshopper, the bike stands securely balanced between the forelegs and hindlegs of the linkaged legs and feet, which serve as both launch mechanisms and shock absorbers for the landing.

The Grasshopper Cycle stores energy via woundup springsteel coils. The brave pilot holds the handlebars and furiously cranks away on the footpedals while the ratchet mechanisms increment the motive force to the coil springs.

When the coilsprings have had as much winding as they can take, a warning alarm sounds, alerting both the pilot and any foolish bystanders of imminent launch. The pilot takes his seat, and presses the release button, triggering the rapid unwinding of the coilsprings.

The energy unleashed is transmitted to the legs, which turn it into an explosive single kick. Direction of the vehicle is controlled by the handlebars which preset the linked tillers to the front-and-rear leg pairs.

When the vehicle alights after it's mighty bound, the pilot sets his direction and immediately resumes pedaling to store energy for the next leap.

I don't know whether to hope that we can't find prior art or hope that we can.