I know for a fact that the reason why road bikes are going up in price locally is because a new generation of twenty/thirty somethings who never have ridden any of them before (grew up in the mountain bike fad era) have gotten on one and freak out because of how effortlessly fast it seems you can go in comparison with the ol' cruizer/clunker/mtbs.
Couple that with how hot these rocker chicks look in short skirts riding fixed gear road french bikes from the 70's and it seems everyone wants one.