Awaiting comments on my idea on android application

My idea of android application is :

This application would be activated by a calendar entry, showing that the phone user has an appointment somewhere (i.e. meeting friends in a town 2 hours away).

--)The application would track the phones position and register that the user is on his way to the appointment (by checking if the user is following the route of Google maps to the destination).

--)The phone would keep a status of whether the phone owner will arrive on time or be late

i am quite good at webdesign,but in android platform i am just a rookie any expert good at android please suggest me good place to start with,

my biggest doubt is

Can i use google maps API to compare mock locations i use in simulator to locations and landmarks in google maps from source point to destination point?

I await some thing useful for me to start my work...