DIAMOND BAR, Calif.–(BUSINESS WIRE)–The 2021 Specialty Equipment Market Association (SEMA) Show opened this morning, officially kicking off with an industry breakfast featuring some of the hottest new products and special guest Jay Leno teasing a customized Mustang built for musician Keith Urban. With more than 1,300 exhibiting companies and 51,000 buyers confirmed to date, this year’s SEMA Show – which runs through November 5 — marks the first full-facility event to take place at the Las Ve