CREATE TABLE table_78362 ("Year" FLOAT, "Network" CLOB, "Lap-by-lap" CLOB, "s Color commentator" CLOB, "Pre-Race Host" CLOB, "Pre-Race Analyst ( s ) " CLOB, "Ratings" CLOB, "Viewers" CLOB)

Which Network has 17.5 million Viewers?
SELECT "Network" FROM table_78362 WHERE "Viewers" = '17.5 million'
SELECT "Network" FROM "table_78362" WHERE "Viewers" = '17.5 million'