Let's be realistic, however. The motorcar has only been in use @ 100 yrs. reaearch is being done in the area of alternate fuels but it is, indeed, "rocket science". Do you not think that anyone is working in this area say at MIT, for example
Anyone would kill for the nobel prize for that discovery. It is worth noting that China, India, & mexico have less stringent regulations in this area compared to the U.S. & that all capitalistic economies are dependent on our ongoing economic robustness which would be negatively affected whilst new technologies were introduced (the whole re-tooling of industry scenario) meanwhile the abovementioned polluters would continue on their merry way.