Hold a pedal, or use the keyboard: W/↑ throttle, S/↓ brake, Space handbrake, I ignition.
Create a device in ThingsBoard, open Manage credentials, and paste its access token. It is kept in this browser only and never leaves the page except to the endpoint above.
A real tracker reports on a curve, not a timer: often when moving, rarely when parked, and immediately on an event — harsh braking, a sharp turn, ignition change, a geofence crossing. Those are sent here as they happen, between the scheduled reports.