Why don't cars blinkers ever blink at the same rate?

I have no idea why I’m “blogging” about this. But seriously, why is it that in all my years of life, I’ve never seen two cars at an intersection that appeared to have their blinkers blinking at the same rate?

There are literally hundreds if not thousands of model cars out there, especially when you count each year’s iteration as a different model.

It’s not that I expect them to be blinking simultaneously, on, off, on, off… no, I just want to see two cars next to each other, blinking at what appears to be an identical rate. Even if they’re blinking opposite, or sequentially to one another. But no, one blinker is always going slightly faster/slower than the other, so that they catch up and blink consistently for the briefest of moments, or maybe even for what appears to be 3 or 4 blinks, but eventually they simply lose track of one another.

I just don’t understand. This has go to be some kind of urban legend, or in a book of “why do we drive on parkways and park on driveways”.

This was a potty question.

Potty questions is defined as: A question no sane person would ever consider except when given a ridiculous amount of ‘free-time’ in which they’re not able to freely do anything but, uh, sit and think. (More Potty questions)