Cool Only 11000 BTU 12V Under Dash Air Conditioner Evaporator, Universal 3‑Speed AC Unit with 32 Pass 4‑Way Coil & Mounting Brackets for Classic Cars, Street Rods, RV Motorhomes

Nothing free. Open windows. Drive naked. They make a cloth neck collar that can be frozen. Drape that around neck. Carry spares in a cooler. Portable car a/c. I have no idea how well they work. Don't know if links are allowed but here's an example. https://www.walmart.com/ip/20237355758?sid=acbe39cf-3848-42b8-a057-f3d2c16dd003