BMW's 2019 Z4 Roadster is already controversial

BMW’s Z-series roadsters are arguably the epitome of the brand: punchy two-seaters, begging to be thrown at a curvy mountain road. The all-new 2019 Z4 – revealed in Z4 M40i form this week at Monterey Car Week – should follow right in those tire-marks, but not everybody is convinced. Only one route seemed fair: throw it open to your vote. …