CREATE TABLE table_58235 ("Driver" TEXT, "Constructor" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT)

What's the average of the amount of laps for the driver patrick tambay?
SELECT AVG("Laps") FROM table_58235 WHERE "Driver" = 'patrick tambay'
SELECT AVG("Laps") FROM "table_58235" WHERE "Driver" = 'patrick tambay'