Boy, these past two weeks have been all about high-speed and high-power action. I barely had time to get over Koenigsegg’s new world speed record and Chevrolet launched its monstrous Corvette ZR1 yet. Now, with the weekend upon us, Tesla took the wraps off its new semi truck and the second-generation Roadster. Neither are ready to go into production just yet, but the preliminary data hints at tremendous performance and new benchmarks for the electric car market. The Roadster’s 0-to-60 mph sprint only 1.9 seconds probably caused a few heart strokes over at Ferrari quarters. And I have a feeling that the guys working on the next-generation Nissan GT-R Nismo aren’t feeling better either. But behind Tesla’s new tour de force hides Elon Musk’s fear that his automobile brand may not succeed as planned.