Physics sankey diagram question

I have a sankey diagram which converts chemical energy to other forms of energy for a travelling car (on a level read at constant speed).

Kinetic energy isn’t included and that’s because the velocity in my question is constant so kinetic energy doesn’t change. That still doesn’t make sense because whether or not kinetic energy changes or days the same, it will still confuse the chemical energy. So how doesn’t kinetic energy being unchanged (as a result of constant velocity) mean kinetic energy won’t be shown in the sankey diagram?

(edited 6 months ago)

Reply 1

Joinedup

Is the diagram provided in the question or is it something you're trying to draw?

There'll be a lot of losses to waste heat
Then losses to air resistance, rolling resistance. Some will go into running the alternator to charge the battery and run the electrical systems etc.