At last year’s L.A. auto show, Mercedes-Benz pulled the wraps from its AMG Vision Gran Turismo, a slinky, low-slung thing that recalled a marriage of the closed-wheel W196 streamliner and the former Daimler property Dodge/SRT/Dodge Viper. For added zazz, M-B rolled out a full-scale model of the thing. Six months down the road, BMW’s announced […]