When I started investigating adapters that would let me use my Macbook Pro in a car or airplane, I never realized I would discover so much controversy surrounding the reliability of such adapters. If my research is correct, there is really only ONE true-blue adapter available that is guaranteed to effectively power your Macbook Pro in a car and plane......and it's EXPENSIVE! Now correct me on anything I might get wrong here. In fact, I am posting in an effort that someone does prove me wrong. From what I read, the Macbook Pro runs on a lower amount of voltage. There are power inverters out there for about $30-$50 that plug into the car lighter amd have a 3-prong plug for the Macbook Pro. From the reviews I read, however, these converters are not very reliable. Either they break easily, or they don't properly regulate the power. Then there is the Magsafe adapter that Apple offers for about $60. True, it's not a car adapter (which doesn't help me), but reading the reviews on Apple's site, I get the idea that this adapter is prone to breaking easily. So, all my research led me to one single product that is being talked about as the most reliable of all the adapters available: http://mikegyver.com/ The problem is the price. $200 is an awful amount of money to spend on something like this. It may come down to the old saying that "you get what you pay for," but until then, I am hoping someone is using alternative products that are working effectively for them. Thanks in advance.