Have you ever pulled out a set of jumper cables and wondered which is the positive end and which is the negative? Don’t worry. Lots of people get this wrong. Michelin Smart Jumper Cables aim to simplify the jump start process. With its built-in polarity switching, positive and negative charges don’t matter anymore. Just connect the cables (don’t forget to ground one end) and check the LED light. If the control box lights up, you are good to go. It also comes with a surge protector to protect on-board electronics. Great for those in a hurry or less familiar with cars and electronics. Retails for $99 at Amazon and Buy.com.