Northwestern University Civil and Environmental Engineering Professor James Hambleton is skeptical of Mayor Emanuel’s plan for a high-speed rail

FILE- In this May 7, 2018, file photo, Elon Musk attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the Heavenly Bodies: Fashion and the Catholic Imagination exhibition in New York. Tesla Inc. is laying off about 3,600 white-collar workers as it slashes costs in an effort to become profitable. Musk says in an e-mail to workers Tuesday, June 12, 2018, that the cuts amount to about 9 percent of the company’s workforce of 40,000. (Photo by Charles Sykes/Invision/AP, File)

Northwestern University Civil and Environmental Engineering Professor James Hambleton explains why he is skeptical of a high-speed tunnel between the Loop and O’Hare, designed by Elon Musk’s Boring Company. Some math may be used in this segment.