A mounting for a power unit for motor vehicles, comprises a support and a support plate fixed thereto, which may be detached in the case of a collision, whereby the support plate is connected to the support in a number of places. The turbine has two foils, which may meet at the axis of rotation, and the turbine is helical and tapered. One example of a new resource that may be created is a resource that integrates previously available but heterogeneous resources as to provide new functionality. The bracket can include a pair of side supports secured to opposing sides of the axle, with each of the side brackets having a length greater than the radius of the caster wheel. An attribute in the sub-expression of the first child node is determined to have a same data type and to be associated with the same table in a relational database as an attribute in the sub-expression of the second child node. All the elements of the base are integrally formed on a base plate to save material and shorten the manufacturing time.