Das Video und die Story sind schon gut zwei Jahre alt, aber ich bin gerade erst zum ersten Mal drüber gestolpert, was das alles ja in keinster Weise schlechter macht.
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Paul Gregg worked with Boeing for 34 years as an aerospace engineer. He has put his expertise into practice for the benefit of his grandchildren by designing and building the most awesome and exciting roller coasters in his backyard in Seattle.
Gregg built the cars out of timber and metal—one looks like a rocket and the other like a little racing car.