Kinesin the motor protein

Every cell in your body contains microscopic protein machines called Kinesin. They are little vehicles that have legs that walk around delivering nutrients and chemicals to different parts of the cell. 

They move very fast but if you slow video footage of them down, they clearly resemble walking. They literally walk along micro tubial framework inside the cell.

Just like all protein machines in the cell, they are printed out from RNA strands that were copied from the reading side of the DNA molecule.