CREATE TABLE table_6458 ("Race" TEXT, "Trophy" TEXT, "Rider ( s ) " TEXT, "Machine" TEXT, "Year" FLOAT, "Average speed" TEXT, "Time" TEXT)

What machine did susan jenness trophy earn the trophy?
SELECT "Machine" FROM table_6458 WHERE "Trophy" = 'susan jenness trophy'
SELECT "Machine" FROM "table_6458" WHERE "Trophy" = 'susan jenness trophy'