When I go camping I always bring along a small inflatable air mattress. It’s pretty nice, and it isn’t that heavy, but I always wish it was a little bigger. What if one was built into the tent floor?
The inflated floor would be separated into sections so it would be firm everywhere and also so if one part gets a tear in it, the whole thing wouldn’t deflate. This separation could be zipped open to inflate the whole thing, and then zipped closed to keep the sections from leaking into one another.
Remember those wind-up toy cars you pull back & let go? What if you put one of those springs in a bike wheel so when you stopped at a light you could get that momentum back again? The idea is so simple – perfect for a bicycle.
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