This really used to disturb me until I discovered the absolute best way to avoid it........
I'm now even more relaxed in heavy stop/go traffic because I don't don't let the competitive impulse overtake me.
Does it make me significantly later getting to my destination if I let someone into the space front of my car? No.
Will I get there faster by tailgating the car in front to stop others from getting between us? No.
So I leave a decent gap, am not stressed and arrive a few seconds later but much more relaxed and happy.
Maybe it does use fractionally more energy, but who cares? It may cost a few pennies more for the whole journey but its worth it.
Even if it was double the energy consumption, its still better than burning dinosaurs and not worth stressing over
Hanuka Matata baby