His own site has the details:
So, why did I create a whole webpage about my motorcycle?Microsoft makes an operating system for cars, but it makes sense that this guy chose UNIX because motorcycles don't have windows. (Har!)
It runs UNIX!
I removed the charcoal can, and cut out most of the plastic casing to install a Shuttle SV24 Flex-ATX motherboard in the tail section. I cut off the rest of the case except for the bare minimum required to bolt in a PCI card on the riser, and all 4 motherboard mounting screws.
I've upgraded the CPU to a P3 Coppermine 1Ghz and added 256MB of RAM. Beneath the 'case', or whats left of it anyway is a 40GB Seagate hard drive.