The agility forums have been littered with worries about having to crate from our cars so Michele and I decided to tackle this tantrum head-on. We both happen to be experts in crating out of our cars, particularly in hot weather - we do not have heat-tolerant dogs by any stretch of the imagination.
Listen as we describe our setups and even post them on Facebook, we have it down to the tiny 4" spot you might have in your car, Cara knows something you could stick there like your chair! We also troubleshoot several safety tips, there are some good nuggets in this episode. 
From sun-reflection to powering your cooling system we know how to keep a car at a comfortable 72° even when the sun is blazing, the engine off and the temps surpassing 90°.
Below you'll find some helpful links to the products we recommend, all of these having been sourced with your wallet in mind. The health and safety of our dogs are paramount but we also need to keep our wallets cool so we can stay hot on keeping up with our entries. 
Schumacher Jump Starter - apologies, this bad boy became more expensive, still sooooo worth it!                                                                                      Click here for the link, it's super long on Amazon (same price on Walmart)
Temperature Monitor                                                        https://smile.amazon.com/gp/product/B07DWMJKP5/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
Aluminet Shade Cloth                                                   https://smile.amazon.com/gp/product/B07CM7W5XN/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1
Dunnage Racks                                                                           https://smile.amazon.com/gp/product/B00DKWOE48/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 12" for the rear of most minivans  
Feel free to email us if you want more!