Question: What are the fewest points that Roger Dutton/Tony Wright have received?
SQL: SELECT MIN("Points") FROM "2-15753390-2" WHERE "Rider" = 'Roger Dutton/Tony Wright';

Question: How fast does the BMW with 6 points go?
SQL: SELECT "Speed" FROM "2-15753390-2" WHERE "Machine" = 'BMW' AND "Points" = 6.0;