The Macbook Air
Was released in 2008 and is a Apple production line of ultra-book (thin durable computers) that competes with the PC lines of ultra-book models, over the years PC design have started to follow the Macbook air design... but to no avail, for PC brands such as IBM, acer, ASUS, fail to produce one as nice looking as the Macbook airs keeping them inside the production line.