Horex VR6

[Pat]

"Another innovation is a chain and sprocket lubrication system, which continuously applies a thin film of graphite to the chain"

Sounds expensive, think I'll wait for a second hand model 

The graphite chain lube is not that expensive, I saw it at the Paris bike show in 2011, basically it's a block of graphite mounted on the swinging arm that the bottom of the chain rubs on intermittently as the suspension does it's thing.