I picked up my Limited Coupe in Miami about 3 weeks ago, and drove home to Austin by way of the Everglades Toll Road at about 9 PM. Traffic was light, and on one stretch my speedo showed 148, and was still climbing when I had to shut down for traffic. I think it would have easily broken 150, maybe more. Speedo seems accurate, but I have not really checked it out carefully. Averaged about 28 MPG on several tanks, even tried 89 and 87 octane with no adverse reactions, although I suspect that "HAL" the computer reigns in a few horses to compensate...