What is the miles per square hour of the cheapest car produced by the USA?
miles per square hour refers to acceleration; the cheapest refers to min(price); produced by the USA refers to country = 'USA'
SELECT T4.acceleration FROM price AS T1 INNER JOIN production AS T2 ON T1.ID = T2.ID INNER JOIN country AS T3 ON T3.origin = T2.country INNER JOIN data AS T4 ON T4.ID = T1.ID WHERE T3.country = 'USA' ORDER BY T1.price ASC LIMIT 1