Leaf is the latest concept car designed by Shanghai Automotive Industry Corporation (SAIC) that features an odd leaf as its roof, giving an impression of being eco-friendly. This innovative roof is crafted from foliage and able to produce oxygen just like a real leaf. Moreover, the leafy roof features a solar panel to generate and store electricity, and more surprisingly, it directs the car to move into a position where it can get the most suitable sunlight coverage. The wheels also contain spinning wheels that can generate electricity too when the car moves forward. This energy-efficient vehicle not only will reduce the fuel cost of operating a car, but also will help developing an emission free environment.

Many tyre manufacturers agree that it is no longer good practice to rotate your tyres in order to extend their legal life. The reasons for this are;