Here in San Diego, the Blitzen Rooftop Chiller is not a good fit but for just about everywhere else, it’s ingenious. It’s a magnetic car roof-rack designed to provide natural chilling for your bottle of choice. A bottle of champagne for the holiday party or a full growler from the local tap room, it’s up to you, the Blitzen holds just about any bottle securely using the frosty winter weather to keep it chill.