8g's is actually plenty for interstated travel. I carry 1 movie, 2-3 TV episodes, and the rest is music 600 songs at 256VBR and some podcasts and 2 chapters of whatever book I am reading.
Get to destination and refresh/replace what has been used. However 32gb would be sweet but Im not holding my breath. Too many high expectations result in many unhappy threads on these forums!