Similar to how we have health bar and the vehicle's health bar in the bottom left I think it would be a great idea to shift upwards or resize the speed/fuel-counter box at the bottom of a vehicle's HUD when driving it. And then place a small horizontal bar underneath the fuel box that has "Dots" just like the health bars but have it count down showing how much driving time we have left based on the current fuel in the vehicle. It should calculate based on the total MJ of energy in the fuel both for the entire stack of fuel remaining. It would be nice for example to know if I have enough fuel left to drive through that acid cloud or that long cave tunnel and know if I will run out of fuel before I get to the other side or if I need to go back and get more fuel and add to it before driving to know if I can get through hazards or not. I love that we currently have the counter to show us how much of the stack of fuel is left but it would be nice to additionally have some way of measuring drive time based on that stack. Also with a "Run time bar", you could add a little flashing /!\ to the end when we get low just like the jetpack has.