Regenerative braking and telephone: what they have in common

1. Step 1. Regenerative braking — is used in — Hybrid car. Regenerative braking.
2. Step 2. Hybrid car — has part — Nickel–metal hydride battery. The first Prius had a NiMH battery.
3. Step 3. Nickel–metal hydride battery — uses — Electrochemical reaction. A chemical source.
4. Step 4. Electrochemical reaction — is used in — Fax. The paper darkened under current.
5. Step 5. Fax — uses — Telephone. Transmission over a telephone line.

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