Abstract: Our invention is focus on the fields of ecology and terrestrial transportation. The goal is to reduce the use of no-renewable fuels, as well as to reduce pollution consequences (the ecological impact). Our system will enhance currents systems by adding a component of energy generation that will: Fossil fuel vehicles: Improve miles per gallon Hybrid vehicles: improve miles per Gallon, Auto recharge battery Electrical vehicles: Auto recharges battery The world's roads are populated with motor vehicles that have tires filled with compress air/solid rubber. These tires rotate changing constantly the point of support. These points suffer vibrations and variance of pressure as result of supporting the car. Our system adds a piezoelectric material or other systems inside the tire. These piezoelectric elements, in combination with the gravity, will produce electricity. The electricity will be transported to the battery of the vehicle. This amounts to transforming gravity into electric energy.