A saw once riding in 80's in downtown SF a frame full of drillium. Yes the frame full of holes (full of drillium ). The sun was shinning thru the holes in the frame. I was so astonished I nearly rode parallel to and on the trolley tracks in the street and crashed. This is to me is the ultimate drillium one can do on a racing frame. I assume at some point rider would hit a large enough pot hole or something to cause the whole frame to collapse.
Charles Nighbor
Walnut Creek