I Found It: a GPS-Enabled LoRaWAN Device …
It advertises 10 hours (yes, hours, not years) of battery life:
Yes, it’s a field testing device and not a “true” mobile endpoint. But … this is the only LoRaWAN GPS out there that I see.
Update: Found another device with a 820 mAh battery which might last three weeks.
Note: GPS devices whose batteries survive three weeks have been tried before in the cellular community with well-known results.
If I learn about more of these I will post them here. But now, come on people, LoRaWAN wasn’t made for GPS and it isn’t a networking stack for people building serious IoT products.