What was Scott Riggs points when he had more than 400 laps?
CREATE TABLE "race_results" (
  "driver" text,
  "car_num" real,
  "make" text,
  "points" real,
  "laps" real,
  "winnings" text
);
SELECT SUM("points") FROM "race_results" WHERE "driver"='scott riggs' AND "laps">400;