Car interior is like "the beautiness of car" so if the inner environment is cool the new energy rise when we drive the car.we have to make it simple but with good looks and innovation.the design favours in our comfort and also the looks will stylish.we can go with any material the only deal is that to make it cool.so go with innovation and make it extra ordinary as all will love it.the real beauty is outside the car so concentrate on driving .good driving feels you better than interior.