Official vehicle OEM API experts needed for EV SoC integrations

We need experts with prior experience using official vehicle OEM APIs. Initial scope: - Tesla Fleet API - Volkswagen Group / CARIAD official API path - Hyundai / Kia official fleet or connected vehicle APIs - BMW CarData - Polestar official remote vehicle data API, if available - Volvo Cars Developer APIs Data we need: - Current State of charge (SoC) - SoC limit set by user in EV - Battery size - Plug status, if officially available Important: - Official APIs only. - No reverse-engineered mobile app endpoints. - No scraping. - No real customer credentials during screening. - No unofficial Home Assistant libraries as the implementation source. Before we consider you valid for paid work, we need a short validation pack: - official API/portal name and link - proof that you can access sandbox, staging, trial, demo car, partner portal, or equivalent official test path - redacted sample request/response from official test access or your existing approved access - field mapping for SoC, SoC limit, battery size, plug status - consent flow and limitations - estimate for first paid implementation milestone Please answer the screening questions directly. Generic proposals will be rejected.