Be cool. The long hot summer is heading into the dog days of August, when temperatures — and temperaments — can start to sizzle. This is especially true in traffic as you travel to the jobsite or head out of town for the weekend or your annual vacation.
Consider taking along an in-car cooler. Koolatron makes 12v thermoelectric coolers that plug into your vehicle's auxiliary power outlet and keep contents 40 degrees cooler than the outside temp — without ice. This means the cooler holds more food and drink, and your contents stay dry, which is very handy while on the road.
Check out this 31-can-capacity cooler that can turn your trunk into a rolling refrigerator with a quickly wired 12v power source. Great for a crew at a jobsite. Another in-car cooler is narrow enough to fit between your front seats and still hold a case of cans.