The present report is to provide a telescoping wing that can be retracted to less than 30% of the extended wing span, which makes it feasible for the use in a road vehicle that travel on highways. Another objective is to provide a telescoping wing in which the spar retains its full carrying capability in the retracted as well as in extended conditions. At last to provide a telescoping wing wherein in during extension and retraction of the wing, all carrying loads elements of the spar remain connected to eachother by three linear and two rotational axis, and only one rotational degree of freedom is required for accomplishing extension and retraction of the wing.