Other Car Rental Programs/Partners (ie. Alamo, Enterprise, Sixt) - Enterprise and GPS nav system?

Hey,

I couldn't find any mention of a GPS nav system in Enterprise cars. I called them, they said they have it, but they couldn't explain to me what kind it was; only that it was a GPS nav system.

So, what kind is it? Is like Hertz's Neverlost? Or is it like Alamo's cellphone nav? Something else?

Thanks.

a modified version of the Garmin StreePilot c340 with touch screen and voice navagation.

here's the press release from Enterprise:
http://aboutus.enterprise.com/file/90/ER_GPS_Navigation_Jan06.pdf