I'm interested in what you find. A black car in summer heat is brutal. I was planning on just bringing an ice cooler and sucking on ice. To keep things cool while parked, I'm thinking of getting a white Tyvek car cover.
I've heard about vests stunt drivers use that works as a mini cooling loop. A small radiator cools water lines that are snaked through the driver's vest. It looks like it keeps them cool, but not uncomfortably cold like an ice vest might. Probably expensive, but cool.
- LostCause