What is the sum of the points when Carlos drove for repsol honda in 8th place?
CREATE TABLE "motorcycle_grand_prix_results" (
  "year" real,
  "class" text,
  "team" text,
  "points" real,
  "rank" text,
  "wins" real
);
SELECT SUM("points") FROM "motorcycle_grand_prix_results" WHERE "team"='repsol honda' AND "rank"='8th';