Define 'embedded taxes'. Are these only corporate taxes? Do they include individual income taxes? This is an area where much fudging occurs. Taxes paid by businesses are only a fraction of total revenues. Most taxes paid directly by individuals.
May I direct you to this thread?
http://www.freerepublic.com/focus/f-news/1483320/posts
It is concerned with gas prices and who is making the excess profits.
Gas and oil prices are something we all can follow, ie., price /barrel, gas futures.
How are we going to keep track as to whether a mfgr. has lowered their price for an item when we have no idea of the savings?
Believe me, any savings will not be passed on to the consumer. Maybe a small portion to keep the 'masses' quiet.