I just got back from test-driving one of the red Signature-Performance versions (w/ pano roof), and all I can say is... Unbelievable!
It’s like driving an almost perfectly silent and super comfortable F1 Racer! It was the first time in my life I was actually given permission by highway patrol to ‘FLOOR-IT’ (on a city street , none-the-less).
0-60 in 4.4 seconds with no effort what-so-ever! I took it to almost 90 MPH and over RR tracks, uneven pavement, and poor road-surfaces, and it was completely stable and comfortable all the way (no jerking, no lag to speed, and no sound). It’s pure-instant-torque on command at any given moment. It almost gives you the feeling that you can look ahead at any open pocket in traffic 200 yards away, and in a blink you are there (it really took my brain a bit to comprehend what this car was doing).
It corners like an F1 racer as well, not even a tire chirp on a curved freeway on-ramp at almost 60 MPH!
As for the re-gen off the accelerator (at full), I actually liked it better than coasting in an ICE car! Very little hard breaking ever needed (which will add years to your break-pads).
I got to say, this was the MOST fun I have ever had test-driving anything in my life!