Hi Fred, theres a very good chance that you will be traveling by train around Europe as it is more efficient and cheaper than flying - the majority of carriages even in the economy class - will have power points in the arm rests or cafeteria carriage to be able to charge your laptop and power any portable storage devices if need be. If I was traveling through remote areas such as Mongolia or Pacific etc I'd be more worried about storage abilities, but external drives and extra memories are very easy to find and affordable. It is still the only continent where I have always felt safe with data storage and security really.