We have had an increase in cooperatives (Poudre Valley being the most recent) in having a Satellite based location on a map option to integrate to AVL. There are a number of COTS tracker options that offer a web services based means of accessing the location of devices. Spot and InReach (Garmin, formerly DeLorme) are the two most common and least expensive both monthly and for the device purchase. (There are also RAM mounts available for vehicles)
The interest is dot on a map location fed into the AVL maps.