As I said many times before on here electric drives of that type suck big time.
This is a recording :)

The motor is 85% times the alternator is 85% the over all effciency is
.85 times .85 = .72% over all. You are wasting 30% of your fuel.
Locomotives do it for one reason and one reason only. High starting
torque.

Paul Lamar


Sorry ... TWO reasons.  Same reason that NFL football linemen all look
like they're pregnant.  Mass.
Might be a plus in certain other applications too; perhaps OK in a
displacement-hull boat, but never on anything that hopes to leave the
ground.

R