This doesn't work. It is a scam. On a normal bike, imagine hooking springs up to each spoke. How far does each spoke move from its position relative to the hub

This doesn't work. It is a scam. On a normal bike, imagine hooking springs up to each spoke. How far does each spoke move from its position relative to the hub during travel? Basically not at all. The recoverable energy it is almost nothing at all. Certainly not worth the extra rotating weight.