CREATE TABLE table_51157 ("Driver" TEXT, "Team" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT, "Points" FLOAT)

When the grid is under 5 and justin wilson is driving for the team mi-jack conquest racing, what's the highest number of laps driven?
SELECT MAX("Laps") FROM table_51157 WHERE "Team" = 'mi-jack conquest racing' AND "Driver" = 'justin wilson' AND "Grid" < '5'
SELECT MAX("Laps") FROM "table_51157" WHERE "Driver" = 'justin wilson' AND "Grid" < '5' AND "Team" = 'mi-jack conquest racing'