This may seem like a crazy question but.... I'll ask it anyway. Being a bicycle racer (on a Colnago of course www.colnago.com) as well as a Ducati rider, I was wondering if anyone has heard of someone or someplace having built a frame out of a different material like Titanium, Scandium, or some kind of material other than steel. I can tell you guys from having owned a titanium bicycle that the ride qualities it offers are outstanding. It never rusts, and will last indefinitely. The cost for 3Al/2.5Vtube stock is much cheaper than in years past due to it's rise in popularity, but I know that the tricky part is with the welding. This must be done in an Argon environment if my memory is not crazy... I would imagine that carbon could be built strong enough to withstand the forces it would encounter as a motorcycle, but the cost would be huge I would imagine... What do you guys think?