Think of the balance of and exchange of favors, or even unformed relationships notice how upset people get when a single person car improperly uses the car pool lane.

FORBES: Four Elementary Forms of Sociality Impacting Trust and Relationships

Sales-wise, Volt has continued tacking to and fro depending on how many of the car GM is manufacturing and, especially, how well the company is doing in meeting the strong demand for a California-ized, car-pool-lane-eligible version of the plug-in hybrid that was introduced last year.

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