POPULAR MECHANICS (ISSN 0032-4558) is published six times per year by Hearst, 300 West 57th St., NY, NY 10019 USA. Steven R. Swartz, President & Chief Executive Officer; William R. Hearst III, Chairman; Frank A. Bennack, Jr., Executive Vice Chairman; Mark E. Aldam, Chief Operating Officer. Hearst Magazine Media, Inc.: Debi Chirichella, President & Treasurer; Kate Lewis, Chief Content Officer; Kristen M. O’Hara, Chief Business Officer; Catherine A. Bostron, Secretary. Copyright 2021 by Hearst Magazine Media, Inc. All rights reserved. Popular Mechanics is a registered trademark of Hearst Communications, Inc. Customer Service: For changes of address, and subscription orders, visit service.popularmechanics.com or write to Customer Service, Popular Mechanics, P.O. Box 6000, Harlan, IA 51593. Popular Mechanics (PM) cannot be responsible for unsolicited material. Mailing lists: From time to time we…