Most bike locks can be cut or to unlock it with the right tools from thieves, making them a good but not perfect anti-theft solution. Three engineering students from Chile had a clever idea, and they designed a bike that doesn't even need lock. The prototype called Project Yerka, It is a bike that according to themselves is impossible to stolen. The frame of the bicycle 'breaks' so as to function as anti-theft chain, While the only way to steal someone's bike to break the skeleton, making it useless.