Read the bio below and try to give details on leif gustafsson 's:    - name     - nationality       Bio: leif gustafsson -lrb- born 7 october 1951 -rrb- was a former grand prix motorcycle road racer from sweden . his best year was in 1975 , when he won the czechoslovakian grand prix , and finished fourth in the 125cc world championship .
- name is leif gustafsson- nationality is sweden swedish