OK so the title more or less gives away the entire "plot" of this very short short film but it is still quite interesting. The point obviously is to try and amaze the audience and draw a reaction by having a car rushing towards the viewer in the hope that audiences still dealing with this new technology will instinctively panic somewhat. Watching it now of course I didn't react this way but you can imagine how it once did (even today we do it in the cinemas it now just means it has to move faster and have effects that make it a lot realer.
However the film is nicely done because the cart going by first makes us assume safety before the car is seen approaching and the music lifts to become more dramatic. Of course it also plays on the fear of that other "new" piece of technology the motor car, so the combination of these factors would have got a good reaction I would guess. Nothing really to it now but it is still interesting to see how it is structured to achieve its aim and then hits it well.