http://www.google.com/intl/en_ALL/help/terms_maps.html :
[quote]The photographic imagery made available for display through Google Maps is provided under a nonexclusive, non-transferable license for use only by you. You may not use the imagery in any commercial or business environment or for any commercial or business purposes for yourself or any third parties.
You may not copy, reverse engineer, decompile, disassemble, translate, modify or make derivative works of the imagery, in whole or in part. You also may not rent, disclose, publish, sell, assign, lease, sublicense, market, or transfer the imagery or any part thereof or use it in any manner not expressly authorized by this agreement.
By using Google Maps, you do not receive any, and Google and/or its licensors (if any) retain all ownership rights in the imagery. The imagery is copyrighted and may not be copied, even if modified or merged with other data or software.
[/quote]
Google interdit assez clairement de faire des copies des cartes mises à dispo via leur appli. Si tu veux reprendre des cartes, il faut passer par leur api (et pour utiliser l’api, il faut une clé qui nécessite un compte google). Sont moins “cool” que l’IGN visiblement 