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Google Maps tests new pop-up ads that give you an unnecessary detour
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
Yeah, it's worth a try. The usability depends on the trips you take and other factors. You need to download the maps beforehand.
I like it when I'm on foot or when I ride my bike, but for longer car trips I use other (online) apps for the traffic warnings and because I only have local maps downloaded.