Garmin Goes Crossover
In a similar move to what Magellan has done with some of their GPS devices, Garmin has announced that soon all of their Nuvi devices will accept Topo maps as well as their BlueChart marine maps. Previously this would have required two GPS devices from Garmin but soon you will be able to load multiple kinds of maps on a Nuvi.
This makes a lot of sense with a GPS device as portable as those in the Nuvi series. The additional TOPO maps typically cost around $115.