TL;DROne Redditor has transformed their Galaxy Watch 4 into a custom motorcycle sat nav.The project employs a 3D-printed shell to house the Watch 4 and its charger.While it looks great, a few software issues still need to be resolved.If you’re not the kind of smartphone user to always trade your old phone in towards credit on a new one, you’ve probably thought more than once about what to do with your old handset. Maybe it gets passed down to a younger family member, or saved as a backup device, but there are also a lot of cool DIY projects you can do with old hardware, like repurposing it as a security camera. What about wearables, though? We just checked out how one smartwatch user turned an old model into a fancy gearshift for their car, and today we’ve got another vehicle-related smartwatch project to share.Don’t want to miss the best from Android Authority?