CREATE TABLE table_28746 ("Year" FLOAT, "Races" FLOAT, "Wins" FLOAT, "Poles" FLOAT, "Top 5" FLOAT, "Top 10" FLOAT, "DNF" FLOAT, "Finish" TEXT, "Start" TEXT, "Winnings" TEXT, "Season Rank" TEXT, "Team ( s ) " TEXT)

What teams started at 39.1?
SELECT "Team(s)" FROM table_28746 WHERE "Start" = '39.1'
SELECT "Team(s)" FROM "table_28746" WHERE "Start" = '39.1'