In the case of the capture spiral, it needs to be so stretchy to absorb the impact of flying prey.

So if the web was made entirely out of dragline silk, an insect is very likely to just bounce right off. But by having really, really stretchy capture spiral silk, the web is actually able to absorb the impact of that intercepted prey.

You know, bike lanes are mostly used by young guys in stretchy pants, you know. So We think we can develop a vehicle that operates on bike lanes, accessible to elderly and disabled, women in skirts, businesspeople, and address the issues of energy congestion, mobility, aging and obesity simultaneously. That's our challenge.