[davideous]

Yes, that's the effect. But I'd only have to carry the generator portion when needed for a road trip. You could perhaps even rent it only when you need.

Even if the generator was in a small trailer, that would provide the range freedom without loosing the storage space (and help with venting/cooling/noise).

[smileysteve]

> Even if the generator was in a small trailer

This has been done; but the small trailer also adds significant friction and aerodynamic drag. It also adds complexity in driving and maintenance.

[bluGill]

True, except the road trip case is also the case where you want more cargo capacity than is standard. A rental trailer for one week that lets my wife pack the kitchen sink actually makes sense.

[pkaye]

At that point might as well just rent an gasoline engine car.