How Raspberry pi motor can move or follow according to the google map(blue line)?

Hlw,

My self Abhinay Raj

I had made project on self driving car, In this project car will be move forward by follow the road lane using raspberry pi camera and some python program.

I want to develop this project by including fully automation in the self driving car. for this i have made one android application for booking cab(like uber). App. is working like such a way,that we will book cab same like as uber where app. will take the user current location and destination location. So, now i want to send the both (current,destination) location to the firebase database.And it will send to the raspberry pi than raspberry pi motor will move or follow the google map to arrive to the user first and than to the destination location.

Suppose that, if we have to go somewhere unknown place, here we use the google map, and it will provide me road on the map which is focus by blue line.. Means, i want to ask that similarly raspberry pi will also get loacation and it should follow the (blue line) the google map.

Please Help me....how can i do this...

thanks...