Aluminium is a wonderful metal, adding lightness to any car it's used in and these days it's most cars, from panels to engines.
With advances in metal forming the most complicated forming can now be achieved.
Steel will always have a place in a car but only where wear is a factor.
Carbon fibre (not fiber) is rigueur for most high end supercars, but is filtering down to the more attainable cars.......adding even more lightness and greater stiffness.
Graphene is now starting to make an appearance amongst the innovators (Mr Koenigsegg)
But Aluminium, the most plentiful metal in the Earth,,,,gorgeous stuff from powering Rockets to your car bonnet.