Poligon sur google map

Bonjour
je dois créer sur google map un polygone avec mes tarifs sur une feuille excel ( deja faite)
le mail de mon client est explicite mais en anglais donc faut comprendre..

How to send the information:

We are interested in getting all the service types you have from/to the airports you cover, in per minute/mile (preferable km) formula, along with a polygon with the limits of your coverage that you can send us using Google Maps feature with highlighted areas, Example: Albuquerque coverage o use the image of a map with a polygon if you find it better.

Please send us an excel file with the information of every service type including; car model/ type, the maximum amount of pax, prices per minute/mile, the start point (airport), covered area (with the polygon).

Per minute mile Sample;

*Sedan: $12.00 the base Rate for all trips and it would start increasing per mile $2.28 (minimum $49.00)

*SUV: $29.00 the base Rate for all trips and it would start increasing per mile $2.49 (minimum $79.00)

*VAN: $99.00 the base Rate for all trips and it would start increasing per mile $3.90 (minimum $169.00)

Attached - Sample Excel sheet so you can send us the areas covered in case it´s more than 1 big area locatable using Google maps