Where can you get gas for $2.75/gallon? This summer its going to go well past the $3 mark, and with the instability of the middle east and OPEC already producing at 100%capacity, the ethanol requirements boosting prices in the USA, and the refinery capapcity still down 35% after Katrina and Rita, it is not going to get better any time soon.
The amount of savings from a hybrid system also depends on whether or not its a true full hybrid, and not the one used in the [i think] Silverado that only boots economy about 15%.
I also am not really concerned about the technology, the current (sorry about the pun) state of development for hybrid technology is pretty well worked out.