For those who have already dabbled in this field, their confidence in the future of the blockchain has been validated and consolidated through a huge crowdfunding fund. So far, about $3.6 billion has been raised based on the etheric block chain, which makes it a "killer app" for the platform. Commercial vehicles: vehicles used for transporting personnel and goods in design and technical features, and can be tractor-trailer. Passenger cars are not included. Commercial vehicles are divided into three categories: passenger cars, vans and semi-trailer tractors. The passenger bus subdivided into small passenger car, city bus, coach, tourist bus, articulated bus, coach, cross-country coach and private bus. Goods vehicles are subdivided into general goods vehicles, multi-purpose lorries, full trailer tractors, off-road trucks, special operations vehicles and special goods vehicles.