When approaching an intersection where the traffic signal is out you should?

Will pushing on a car always change the cars mechanical energy? what must happen for the cars kinetic energy to increases?

Is it possible to use the energy from two atoms colliding to create a clean burning lasting fuel source with a large amount of force? is it also possible to harness that energy from the two atoms colliding to create a clean energy source that will last for years from just two atoms colliding. is there a possibility to control and store that energy for years but slowly let the energy out enough to power cities cheaper and faster.

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity