Once it is solved, the rest of the work is easy," the 48-year-old said. He needed 90 helpers for one of his most recent works - a life-size Lego tram ... 6,800 man-hours to assemble the tram ...

Once it is solved, the rest of the work is easy ... a life-size Lego tram made up of a staggering 1.8 million pieces. Together they put in around 6,800 man-hours to assemble the tram, Doczy ...