1_caring_nurse, I appreciate and share your concern about gas prices. I hate spending $60+ to fill my gas tank - and I use a tank of gas in about 4 days, so it hits me particularly hard.
However, the whole "National Gas Out Day" thing has been circulating for 5+ years now, and it's been pretty much proven that it doesn't work.
Check out this link here:
http://www.snopes.com/politics/gasoline/nogas.asp