(6) Subscriber Revenue

          Subscriber revenue consists of subscription fees, revenue derived from agreements with certain daily rental fleet operators, non-refundable activation and other fees as well as the effects of rebates. Revenues received from OEMs for subscriptions included in the sale or lease price of vehicles are also included in subscriber revenue over the service period.

          Subscriber revenue consists of the following:

		For the Three Months								For the Six Months
		Ended June 30,								Ended June 30,
		2011				2010				2011				2010
Subscription fees		$	636,251			$	598,098			$	1,255,542			$	1,172,819
Activation fees			3,391				3,532				6,538				8,320
Total subscriber revenue		$	639,642			$	601,630			$	1,262,080			$	1,181,139