Of course they did. They have been evolving for billions of years, just like everything else.
You didn't think they just suddenly appeared, as a creation by intelligent design, did you?
They can be traced back to rotifera, which then formed expeditious groups, much along the line of slime molds or groups of amoeba.
The final step was when they became capable of eating naughas, and excreting their hides as seat covers that they really came into their own.
I thought everyone knew Detroit was a "secret" breeding farm, with the 'factories' as a half hearted front....
ROFLMAO!!!!!
BTW, It's going to take me an hour to clean the coffee off my monitor that I spit from laughing.