Back in the days of sweaty vinyl seats and suction-cup dashboard fans, the best car air-conditioning was hanging your head out the window like a panting cocker spaniel. Today's systems are a lot more sophisticated, but they need to be well looked after. For $69 (normally $245), the smarty-pants technicians at Hampstead Auto Repairs will re-gas your car's air conditioner with up to 650g of gas. The service includes checking oil levels and leak detection, checking the system and cooling fan operation to ensure it's providing the maximum cooling capability, replacing oil in the air compressor of the air conditioning unit if required and a nitrogen recharge to test for any major leaks. Take up this deal and you'll be the coolest pooch in the car park come summer.