We've seen the huge burden of eight years of war on our troops -- tour after tour, year after year, missing out on moments that every parent treasures: a baby's first steps, the first words, the day the training wheel comes off the bike, birthdays, anniversaries.

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BriTek recently unveiled its amazing new Energy Return Wheel, which is an airless bike tire that can never go flat.

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Make sure to lock the bike carefully by pushing the front wheel into an empty dock.

BBC: Bike sharing around the world

With a wheel off design and super flywheel, the iPhone connected bike trainer is engineered to produce an ultra-realistic road feel, equivalent to the inertia of an actual rider on the road.

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Locking the back tire to prevent theft (if a lock is used at all) is a trick that definitely only works in Japan -- you can't leave a bike unattended for five minutes in New York City without it disappearing, even with a wheel lock.

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