1. A vehicle with a radar for detecting distance and relative velocity between the vehicle and an object comprising: a radar including a transmitting/receiving antenna; a storage element for storing course data for said vehicle with said radar; an extraction element for extracting a superimposed object from a plurality of objects detected by said radar in the course when said vehicle operates after the course data is stored; and an identification element for comparing the extracted superimposed object with the stored course data to identify the superimposed object; wherein said extraction element extracts objects detected by said radar by selecting objects having a corresponding received signal intensity greater than a predetermined threshold.