If only target made singlespeeds, road bike geometry singlespeeds with brakes would firstly make the bikes cheaper to make, and thus better quality for the money, and the the bikes would be a joy to ride, and would really get kids hooked into biking. All the problems that make cheap bikes stuff up, (mainly shifting, derailleur, suspension) would be gotten rid of.
The new cruisers, are a step in the right direction, (singlespeed), but also a step in the wrong direction (making bikes look cool, rather than functional).
Singlespeeds at kmart are only a dream though...