Let's estimate the required energy consumption for an airship
with diameter 10.6\,m
% 6000km. aachen to new york
The force (or energy per distance) required is
\beq
\frac{1}{2} c_{\rm d} \rho A v^2
\eeq
Hybrids:
part airship, part plane
World Sky-lift
heavy-lift hybrid-airship skycat 1000
Dynalifter
http://www.dynalifter.com/
``roadless trucking''
Turtle airships
Ekranoplane