Speeding Nowhere

Two brothers living alone unsupervised in a robot invested planet known as Metropolis. They travel from place to place, getting whatever is left in shops, malls, markets, etc.
As the two try and survive what's thrown at them, a cackling scientist plots away in one of his many lairs. his name is known as Ivo Robotnik. An evil scientist who succeeded in creating his so called "Robotropolis" or as some call it, his Ultimate Utopia, Eggman Empire. Eggpire.