What is the value for Podiums, when the Season is after 2008, and when the Series is GP2 Asia Series?
CREATE TABLE "career_summary" (
  "season" real,
  "series" text,
  "wins" text,
  "podiums" text,
  "position" text
);
SELECT "podiums" FROM "career_summary" WHERE "season">2008 AND "series"='gp2 asia series';