One of the seminal problems with America is that its educational system doesn't nearly do a good enough job of educating its students, so that, things such as horsepower, which is a term commonly used to describe how powerful a car engine is, are not properly defined to those students, and because that definition is lacking, many people thereby assume that a car with 300 horsepower, must mean that the engine of the car at peak performance is therefore the equivalency of 300 horses at peak performance, which simply isn't true.
The thing that we need to remember about horses is that horses are big animals, that can weigh about 1000 pounds, and that certain breeds of horses can run at over 40 miles per hour, though they aren't able to sustain that speed for very long, which clearly indicates that horses are magnificent animals, that generate a lot of power and strength. Therefore, one might logically think that even just one horsepower must be pretty darn impressive, but in actuality, when it comes to what horsepower actually is, that isn't the way that horsepower is defined.
In actuality, horsepower, is a unit of measurement for steam engines, that James Watt coined, of which, one horsepower is defined as a “single horse lifting 33,000 pounds of water one foot in the air from the bottom of a 1,000 foot deep well.” This thus signifies that horsepower isn't really about how fast a horse runs, and isn't even a true technical term that equates perfectly to vehicle engine power, but rather is used as a measurement to provide perspective to how powerful a car engine is at maximum performance, of which, horses themselves, if defined by that same method would in their speed, be defined as being capable of running at fifteen horsepower, at peak performance.
So then, horsepower and the power of one actual horse is not one horsepower and never has been. Additionally, there are plenty of people nowadays that aren't really able to conceive of how powerful a horse is, because they have never ridden a horse, or actually seen a horse, close up, and because of that, aren't able to conceptualize how powerful and big a horse in reality is, even though, horses have previously been used as the primary means of superior transportation for hundreds upon hundreds of years by human beings.
The thing is that nowadays, with the basic exception of true cowboys, people who ride horses are typically doing so only as a weekend activity and not as their primary way to get from one place to another, and if not that, they are utilizing a horse for actual work duties, so that horsepower, even when incorrectly perceived, is not something that “city slickers” are all that familiar with.
Indeed, it would be beneficial if students were educated in a way and manner, that they would know what horsepower actually meant, technically, because it doesn't mean what a significant amount of people logically think that it must mean, which is one of the reasons why we end up saying and thinking things that are wrong, and expressing such as if we know what we are saying, when in actuality we haven't a clue.