Difference being "don't save" would mean not being ingested at all; if it is sent to google, a stink could be made (perhaps by sniffing netreqs, looking at GPS requests, etc). Once it's in Google, us peons would have no way to verify any claim.
No. "don't save" does not mean "don't send to google".
All geolocation based on GSM cells and wifi sends your location continuously.
How can it be not ingested at all? If Google is giving me turn by turn directions it needs to know where I am.
Google maps vs tracking location at all times, though.