CREATE TABLE table_2021 ("Fiscal year" FLOAT, "2-car sets" FLOAT, "4-car sets" FLOAT, "6-car sets" FLOAT, "8-car sets" FLOAT, "Total vehicles" FLOAT)

What is the lowest fiscal year if total vehicles is 490?
SELECT MIN("Fiscal year") FROM table_2021 WHERE "Total vehicles" = '490'
SELECT MIN("Fiscal year") FROM "table_2021" WHERE "Total vehicles" = '490'