Table: spanish_grand_prix_2001
Columns: driver
constructor
laps
time_retired
grid

Question: Who built the under grid 6 car with under 49 laps?
SQL: SELECT "constructor" FROM spanish_grand_prix_2001 WHERE "grid" < 6 AND "laps" < 49

Question: Who built the grid 2 car?
SQL: SELECT "constructor" FROM spanish_grand_prix_2001 WHERE "grid" = 2

Question: Who built the car that retired due to suspension before 65 laps?
SQL: SELECT "constructor" FROM spanish_grand_prix_2001 WHERE "laps" < 65 AND "time_retired" = 'suspension'