Assembly Line: A manufacturing process in which parts are added to a product in a sequential manner to create a finished product much faster than with handcrafting-type methods. This was famously implemented by Henry Ford in producing his Model T cars.
Suburbanization: The growth of areas on the fringes of cities due to increased use of automobiles; it's like spreading out your favorite toppings from the center towards the edges on your pizza!
Interstate Highway System: A network of controlled-access highways that forms part of the National Highway System in the United States; think about it as veins carrying life (in this case vehicles) across America's body.