What are the main differences between electric motor and internal combustion engine for an ATV-sized mobile robot platform in terms of functionality, implementation difficulty ("RC" conversion, "electronic" operation), durability and maintenance when used as an autonomous platform? A full sized ATV/UTV like Polaris Ranger (EV) is in question.
Are the advantages/disadvantages basically the same as the differences between electric and nitro RC cars or does the bigger scale adds something important to the game? I can think of the main differences like bigger range and faster "refueling" with IC and less maintenance with electric but I am interested in a detailed comparison.
The transmission for the IC engine is considered to be automatic.
EDIT: The fuel injection for IC is considered to be electronic (EFI) but I do not know whether that also means the "electronic" throttle (no mechanical wire as with carburetor?). Whatever the throttle may be I see the lag between its "actuation" and the engine running into higher RPM and giving more power/speed as the main disadvantage for IC control - however, it may probably be quite easy dealt with in software (by adding some timeout when checking desired RPM).