Investigators are studying CCTV vision from Carlton train station to determine how a pram carrying twin two-year-old girls was able to roll onto the tracks.
Tasmania, once considered an Australian leader in public transport, now ranks among the worst in the country, according to a report published earlier this year.
The 12-metre high machine has coke bottle eyes and a crude Wall-E-like head, as well as large arms that can be fitted with blades or paint brushes
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