CAFE Foundation
... that the CAFE Foundation holds races in which general aviation aircraft compete for performance efficiency?
... that the <b id="mwEgE"><a href="./CAFE_Foundation" id="mwEgI" rel="mw:WikiLink" title="CAFE Foundation">CAFE Foundation</a></b> holds races in which <a href="./General_aviation" id="mwEgM" rel="mw:WikiLink" title="General aviation">general aviation</a> aircraft compete for performance efficiency?