Presently, unbeknownst to unsuspecting drivers worldwide, green LENR transmutation processes are occurring at very low rates during operation of three-way catalytic converters installed in over a billion cars and trucks. Radiation-free nuclear transmutation of chemical elements by LENRs inside catalytic converters is strongly indicated by the presence of anomalous Gold, excess radiogenic Osmium, and shifts toward heavier isotopes that have been reported in Platinum and Palladium found in micron-scale nanoparticles that are emitted from vehicle exhaust pipes. Extensive sampling and chemical analysis of certain roadway dust and roadside soils by environmental scientists have revealed that in scattered locations nanoparticulate Gold emitted from motor vehicle exhaust has accumulated to the point where local concentrations of this precious metal nearing key minimum threshold of 0.5 ppm needed for economic Gold ore. This surprising nuclear activity in ubiquitous catalytic converters and absence of deleterious consequences for drivers or Earth’s environment argue that world is already safely coexisting with LENRs. This supports idea that LENRs could potentially be a very attractive future source of green nuclear energy if the technology is successfully commercialized.