The ChemE Car That Cud showcases Wyoming’s dominant industries of agriculture
and mining by utilizing rumen fluid from a cannulated beef cow to generate
hydrogen to be used in a hydrogen fuel cell and radioactive cesium, a byproduct
of uranium that is often obtained from Wyoming’s mines, to time the car’s stop.
The concentration of cesium-137 source is measured using the radioactive decay
of cesium shielded by aluminum. The painted aluminum chassis was obtained from a
previous team at UW, and modified using plastic k’nex toys to adapt to the
current power source and stopping mechanism.