I'm a loner in a world of clones
A Clone is a pair (or more) organisms that are genetically, perfectly identical.
Because everyone is so unoriginal and monotonous nowadays, Truck feels as if he cannot relate to anyone. He is “walking alone”, not with the other “clones”.
Check it out here: https://www.youtube.com/watch?v=_I1IX2cqjQ4&feature=kp
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