Question: What was the engine of the Hoover Motor Express after 1955 with greater than 0 points?
SQL: SELECT "Engine" FROM "2-1236063-3" WHERE "Year" > 1955.0 AND "Points" > 0.0 AND "Entrant" = 'Hoover Motor Express';

Question: What is the average year that the Belanger Motors had an Offenhauser L4 engine?
SQL: SELECT AVG("Year") FROM "2-1236063-3" WHERE "Engine" = 'Offenhauser L4' AND "Entrant" = 'Belanger Motors';