Dieselpunk: The heavy Bike.

Via: Alterra 1

"This machine is a heavy duty bike used as a tactor or as a movable engine (then the rear wheel is removed and a machine is pluged in place of it). This machine belongs to the beginning of the Alterra colonisation, when power units where rare and only used as community devices.

It works with pressurized hydrocarbures (sic), the power unit is a turbo-machine and the transmission is first a "torque convertor" and then a strong shaft to the rear wheel."