### Clue: Punch might get this measurement! (10)
### Answer: HORSEPOWER 
 ### Explanation: Definition: this measurement
  HORSE(the Suffolk Punch, an English breed of draught horse) + POWER(might,strength).  Alternatively, I considered a cryptic defn., in keeping with the movie theme, exemplified by the punch delivered by Mongo on a horse, knocking it down – not much power in the horse there – in Blazing Saddles.
Defn: In physics (and Top Gear 🙂 ) the measurement of rate of energy output, ie. units of energy per unit of time.