The 2019 Ford Mustang Bullitt is now in its third sequel and getting better with every evolution. Ford has made a mini-franchise out of limited-edition Bullitt models that pay tribute to the fastback’s film debut in 1968 with Steve McQueen at the wheel. The now-legendary “Bullitt” film came out 50 years ago on Oct. 15. I was in the theater then, a car-crazed 14-year-old. After that death-defying car chase with the bad guys in a...