[E-Revonut]

Look at all the new V8 engines that drop cylinders at highway speeds. The new Hemi in the Dodge trucks is one I know of. It makes about 350HP peak at about 5000RPM's so at highway speed, about 1700RPM's it might make 125HP but more likely below 100HP, then it takes half the cylinders away so maybe 50-60HP tops moving a 6000lb truck at 55-60MPH. I think 18HP shall be plenty to move a combined weight of say 700lbs for the vehicle and two passengers.