How to get/plant off road routes in Google Maps?
http://www.google.com/mapmaker

This application can be used to plant manually roads on the maps.  

Is there a way to do the same through Google maps API   
or   
to plant manually roads on the maps, and then save the map?  

Will it make sense to use markers and draw lines between them to plant routes?
How to get/plant off road routes in Google Maps?
===

http://www.google.com/mapmaker

This application can be used to plant manually roads on the maps.  

Is there a way to do the same through Google maps API   
or   
to plant manually roads on the maps, and then save the map?  

Will it make sense to use markers and draw lines between them to plant routes?