In this lecture, we will present the relation between the modification of mobility patterns and the need for lightweighing for automobiles. For many years, to improve security and comfort, car manufacturers have increased the weight of their vehicles. However, due to environmental concerns, numerous countries have implemented their own CO2 emission rules. Currently, many different strategies exist to address these emission reduction objectives. One important way is the mass reduction of automobiles, in particular, for hybrid and electric cars. There are three main ways to do so, of which two of them are using materials with a lower density or materials with better mechanical properties. We will investigate the balance between both solutions from mass production to premium sport car manufacturing. This will aid us in describing the development and design of vehicles in the future.