The M1030M1 JP8/Diesel Military Motorcycle gets 96 mpg.

[rcavictim]

rcavictim,

How about just getting rid of 1 battery.? Enough to make room for the Launtop 6hp diesel.
Have the Launtop/mini-alternator charge the batteries?
That way you could add diesel power without changing your drive system.

Hybrid?

(as a plus, you could burn diesel, biodiesel, veggie oil blends, maybe even WMO)
Veggie

That 60 lb., 28 volt generator run as a motor on 48 VDC makes about 2.5 HP.  That is only enough to propel the ~800 lb vehicle (with driver) at the regulation max 20 MPH allowed for e-assisted bicycles. I needed about 23:1 reduction drive ratio to get the vehicle to move.  I would need to change the motor to a lighter, higher power unit like the ETEK or better for making it a true commuter vehicle.