CREATE TABLE table_58885 ("Circuit" TEXT, "City / State" TEXT, "Date" TEXT, "Winner" TEXT, "Team" TEXT)

What is Winner, when City / State is 'Mallala , South Australia', and when Team is 'Elfin Sports Cars'?
SELECT "Winner" FROM table_58885 WHERE "City / State" = 'mallala , south australia' AND "Team" = 'elfin sports cars'
SELECT "Winner" FROM "table_58885" WHERE "City / State" = 'mallala , south australia' AND "Team" = 'elfin sports cars'