[komali2]

Total individual perspective here, but my dad took me on his worksite like 15 years ago to see the big super gorram awesome trucks (seriously those things are HUGE). When I asked about the engines, he said the trucks had massive diesel generators that powered motors, that in turn powered the wheels and hydraulics. So in a way, lots of construction equipment has kind of already been "hybrid."

[ClassyJacket]

I believe that's also how diesel trains work.

[pkulak]

And submarines.

[fnj]

An electric power transmission is hardly hybrid. You just have two extra conversions in your transmission, mechanical to electric and electric back to mechanical.

[jhayward]

The diesel-electric system used in Locomotives and heavy off-road mining trucks are literally examples of series hybrids. You may be objecting to ththe lack of battery storage, which isn't useful in those applications.