"Imagine engineers were able to design cars with car building factories inside, with the ability to build new cars with car building factories inside them."
Here is a modest attempt to summarize the main scientific evidences for design in our world, for those who have been told that such evidence does not exist.
Conditions on Earth, the laws of physics, are not only fine-tuned for the survival of intelligent beings, they are fine-tuned for the development of technology.
That Darwinism seems even superficially plausible depends completely on the ability of living things to reproduce themselves without significant degradation.
You do not need to study mutations for thirty years to predict that bombarding plant chromosomes with radiation will not lead to major agricultural advances.