Cat’s eye and GPS (satellite navigation): what they have in common

1. Step 1. Cat’s eye — has part — Vulcanized rubber. A rubber pad wipes the lenses clean.
2. Step 2. Vulcanized rubber — is material for — Pneumatic tyre. A tyre is made of vulcanized rubber.
3. Step 3. Pneumatic tyre — is part of — Electric car. An electric car’s wheels have pneumatic tyres.
4. Step 4. Electric car — evolved into — Self-driving car. Most self-driving cars are built on electric platforms.
5. Step 5. Self-driving car — has part — GPS (satellite navigation). Satellite navigation.

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