Originally Posted by tmhays
What are the preferences in gas motor vs electric? What is the power difference like?
Speaking just about the motor, there is no comparison and why modern rail locomotives use them. An electric motor has a high output and flat torque curve across the rpm band from start-up. It can eliminate much of the need for gearing needed in ICE engines.
Electrical storage for mobile applications is another matter and the main obstacles currently in the way, overcoming weight and cost.