Well, I would not call this a futuristic MTB.  But it is a tutorial at Digital Tutors and I bet a bunch of students made it. 

I do plan on making a few MTB's.  Did one years ago but was new to modeling so all the boolean in the rear casette was not good.  I deleted it.

If I get the Latham finished (3d Modleling forum) then possibly a decent bicycle for off road is on the list for projects.  I ride a PUSH modified Turner 5 Spot with Fox 36 Talus.  Not so futuristic, but if you are into MTB's, you'll know what that is.