SELECT SUM("Grid") FROM table_43497 WHERE "Constructor" = 'renault' AND "Laps" < '4'
How many grids had a constructor of renault and less than 4 laps?
CREATE TABLE table_43497 (
    "Driver" text,
    "Constructor" text,
    "Laps" real,
    "Time/Retired" text,
    "Grid" real
)