An interesting read from the perspective of a former Citizens Stamp Advisory Committee member (Cary R. Brick) concerning some of the recently issued and/or upcoming selections for US Stamps:
http://www.watertowndailytimes.com/...04/702239734Assuming the information he states is accurate, it sounds like the upcoming Hot Rods Stamps is an event likely to take place at the Street Rod National East in York, PA on June 6-8, 2014.
And don't overlook his "Thumbs Up/Thumbs Down" commentary at the end of the article which includes some of his opinions that many stamp collectors will find interesting.