Car sharing and kite: what they have in common

1. Step 1. Car sharing — uses — GPS tracking. Tracking cars.
2. Step 2. GPS tracking — uses — GPS (satellite navigation). GPS.
3. Step 3. GPS (satellite navigation) — is part of — Military drone. Satellite navigation.
4. Step 4. Military drone — is a kind of — Aircraft. An aircraft.
5. Step 5. Aircraft — includes — Glider. An aircraft.
6. Step 6. Glider — evolved from — Kite. Lilienthal and Cayley studied the wing with kites and gliders.

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