The Sleuth knew it was coming, but still he was completely slack-jawed when the latest concept version of the next-generation Z4 roadster was revealed by BMW. Assuming that the automaker doesn’t tone down the design when production begins, the stunning Z4 should be a smash hit with sports car enthusiasts in general, and BMW loyalists in particular. The car’s graceful lines include a long, pointy hood and a rear end that also appears lengthened, compared to the old Z4. However, based on Spy shots of BMW’s test car, it’s uncertain whether the aerodynamic domes positioned behind the twin roll bars will make it to production. BMW remains mum on propulsion systems, but word has it that turbocharged four- and six-cylinder engines are the likeliest choices. The Z4 is expected to arrive next spring as a 2019 model alongside the next-gen Toyota Supra coupe (both cars will be built off the same platform).

The Z4 concept is stunning, although it’s not known how close the production version will be. (PHOTO: BMW)

BMW’s revived sports car nears completion: