The vendbot reminds me strongly of the Soft Drink robot in Macross, which while excellent at providing tasty beverages was not very good at recognizing what "go for help" meant.
Another robot to consider might be the tourbots from Grimjack: these were very cheap hovering robots that had a VR telemetry system in them. They were designed to let tourists tour the more dangerous parts of the city.
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The vendbot reminds me strongly of the Soft Drink robot in Macross, which while excellent at providing tasty beverages was not very good at recognizing what "go for help" meant.
Another robot to consider might be the tourbots from Grimjack: these were very cheap hovering robots that had a VR telemetry system in them. They were designed to let tourists tour the more dangerous parts of the city.