Lately i've been imagining wild new vehicles, none of which could probably work. But I did learn about torsion springs and immediately i thought "wouldn't it be cool to have a torsion spring on a bike that you can charge by pedaling, then release it for hyper speed?! (hyper speed meaning 30 on a DF and possibly 30-40 on a bent). Has anyone else thought of this? I'm sure there are problems, so all you technically inclined people, now's your chance to burst my bubble. Let me know what you think!