He invested only 1.6% of that sum – while spending millions on luxury cars, flights on private jets and lakefront mansions, according to court documents. Mr Pleterski was still in high school when he began dabbling in cryptocurrency, using it to make purchases in video games like Call of Duty.At the same time, he started noticing people “posting luxury cars, posting luxury lifestyles” on social media, he said during an interview for his bankruptcy case. Mr Pleterski looked into it and found many said they made their money from cryptocurrency investments. “That’s what sparked my interest,”…