Everything is stored locally in your browser. Public endpoints are intended for prototypes and light personal use.
Until a Mapbox token is added, the app automatically uses the API-key-free OpenStreetMap road map.
Optional for now. Without a token, the free road map plus fallback address search/routing remain usable. Add a public token beginning with pk. later to automatically switch to Mapbox search, traffic routing, and your selected Mapbox style.
Mapbox supplies gas-station locations. Keep a HERE key only if you want HERE's station-level fuel prices; otherwise stations can still appear without a price.
Supported placeholders: {north}, {south}, {east}, {west}, {lat}, {lon}, {radiusMiles}, {apiKey}. Expected JSON can be an array or an object containing stations, results, or data.