Are you still trying to figure out what to give your dear old Dad for Father’s Day? If he’s a coffee or tea drinking commuter, the ThinkGeek Hot Rod Heated Travel Mug might be a good option. This insulated mug features a 12-volt DC adapter that you can plug into your car’s power socket to keep your beverage warm. An analog temperature gauge and an on/off toggle switch give it a cool retro style. The Hot Rod Travel Mug is available in glossy black or red for $19.99 – $24.99 respectively from ThinkGeek.