Every driver wants his car was fast, comfortable, reliable, economical and safe. His desires are understandable, but internally contradictory. Something always have to sacrifice: to improve certain qualities to pay other deterioration. While most "extreme" is physical strength.
Lose weight, to save
Economy depends on the mass of the vehicle. After the oil crisis of the 70s of the twentieth century, cars have become much easier. This was facilitated by, on the one hand, the development of processing techniques have become, the use of computer modeling, which helped precisely calculate the load on each part of the body or part. On the other hand, the prices for oil, vehicles had to "lose weight" in order to save on fuel.
More accurate data and the emergence of more and more new alloys allowed to do many of the details are thinner and lighter. For example, much thinner steel exterior body panels: the front wings, the outer door leaf. In principle, the reliability of the car will not be harmed. Galvanized metal technology have resulted in not the worst, and now even better results on the stability of the body to corrosion.
However, after heavy hail car is likely to be similar to a golf ball - all in a small dimple. But this is a so-called force majeure, provided all such situation is impossible. If before the vehicle resist corrosion due to metal thickness (thicker metal rusted longer), it is now galvanized steel allows to give a guarantee against rust up to 12 years until "consumed" a thin layer of zinc deposited on the surface. Of course, in the absence of chipping and damage from foreign objects.
On modern cars rust galvanized metal saves
True, the bodywork paint has become more fragile. And the cause is the desire to get a car that meets the requirements of environmental protection legislation. Modern automotive paint in many respects superior to paint the mid-1950s: there are many colors, additives "metallic", "pearl", "chameleon". But the most significant - is the absence in the harmful lead additives. But these supplements provide automotive paint chipping resistance emergence.
Air emissions of lead compounds have been so significant that today a return to lead additives in paint and can be no question. The company aims at achieving the chemical industry, which at one time managed to make less harmful dyes and colors more vivid and varied. Now the task is to make the paint resistant to damage.
Soft body for accidents
Savings program have gone on to strengthen the superstructure cab, creating a so-called "protective cells". The great achievement of Engineers began crumple zones and the creation of powerful, virtually non-deformable superstructure cab.
The use of different kinds of metal (more durable and softer), the use of computer modeling of deformation of the superstructure of the front and rear has allowed modern cars to gain more points in terms of security. They no longer get 2-4 stars in the mid-1990s, and 3-5 stars for adult occupant safety by the method of EuroNCAP - European independent organization conducting its own testing of passive safety (ie safety in case of accidents) cars. For example, the Citroën C5 car in a frontal crash test with serious deformation of the front end all roof rack minimally displaced or deformed, and thus the space inside the cabin and did not decrease the risk of injury is reduced. By the way, the American method of crash test simulates a collision at lower speeds. Therefore, the European technique is more indicative assessment of progress in building a safe car.