We use an online bill-paying service, and we buy almost everything by credit card so we can rack up mileage rewards.

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Old movie stars stared out over a leatherette couch, a television, a rack of videocassettes, a card table with a few chairs.

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To drive one, a consumer would swipe a credit card, remove a car from the rack, then deposit it at another rack across town when finished.

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However, once you leave the country where you bought the local SIM card, the calls you receive from there will rack up international roaming charges.

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Consumers can also rack up rewards points much faster than when they swipe their credit card.

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