Data contribution is from sunnypilot, a fork of openpilot. This fork integrated map data using OSM, with < 1m accuracy integrated GPS transmitter.

What is sunnypilot, you may ask?

• sunnypilot (sunnyhaibin’s openpilot), a fork of comma.ai’s openpilot. This fork enhances the user driving experience for Hyundai/Kia/Genesis, Honda, Subaru, and Toyota vehicles with openpilot with modified behaviors of openpilot engagements.
• sunnypilot is one of the trending forks within the legitimate forks of openpilot.