<page_title> March Engineering </page_title> <section_title> Formula One results </section_title> <table> <cell> March 721 March 721X March 721G <col_header> Car </col_header> <row_header> 1972 </row_header> </cell> <cell> Ronnie Peterson Niki Lauda <col_header> Drivers </col_header> <row_header> 1972 </row_header> </cell> </table>
Peterson and Niki Lauda drove the 721X cars.