> The ICE wastes most of its fuel energy as heat with a fraction going into actually providing drive.
But that fraction is constant however big the drag is. If there's twice as much drag etc. then you're going to burn twice as much fuel and your engine will run hotter, it's not like the heat is some fixed overhead.
But that fraction is constant however big the drag is. If there's twice as much drag etc. then you're going to burn twice as much fuel and your engine will run hotter, it's not like the heat is some fixed overhead.