The problem I have with that is some countries I travel to a laptop would get stolen or no power for them without solar charging. Don't get me wrong I do use my laptop when I can with the Delorme GPS and software but when traveling out of country or off the beating road I use the Garmin and also as a back up to the laptop in the states. Plus my laptop isn't water proof or that durable.
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Failure is not an option!
USMC Jungle Environmental Survival Training PI 1985