Yes a turbine engine is a internal combustion engine, specifically a Brayton cycle engine vs a Otto or Diesel cycle piston engine. Turbines are not used in car

Yes a turbine engine is a internal combustion engine, specifically a Brayton cycle engine vs a Otto or Diesel cycle piston engine. Turbines are not used in cars because they have high rpm and low torque requiring large transmissions to gear them down properly. They also are not very responsive to throttle requiring spin up, very noisy and have have an abundance of hot exhaust to deal with. You can't muffle them as easily. Series hybrid diesel electric trains are actually less efficient than diesel mechanical drive trains. They are used because of the need for precise traction control to prevent wheel slip, they sacrifice efficiency at speed though to attain it. Double conversion from mechanical to electrical back to mechanical will always be less efficient than a straight through mechanical drive once up to speed, this is why nearly all hybrid cars are parallel and go full mechanically coupled at highway speed.