Wow, you should rent your non-existent dog as engineer. Because being able to understand that the audio comes modulated in the frequency of the carrier is not the same than knowing how to resolve the Nth Bessel function necessary to implement a dsp processor, or how to calculate the adecuate bandwith of your filter without using the just-use-the-approximation that give the Carson's rule.

If parents cannot be trusted to mind their children online, they cannot be trusted to vote you in the next elections...

Is this the first time the US goverment give helps to replace old cars? In Europe is a common practice and I though it was a worldwide routine.

(If I recall correctly, it started here in mid 80s to help the transition from leaded to unleaded gas and to improve the general safety of the cars - you know, in those days people drove those 70's tiny tin-'cubic'-car with sharp edges and no safety belt)