This does not compute. Yes, I did this with my Volt because it was interesting to see how many miles I could get with my measly 10kwh battery, but we have gobs of battery in the S and a GO pedal that outperforms most other cars out there. Man up and put the hammer down!
+1 coming from the Volt. Hammer down when you want, drive normally when you're supposed to, be safe and sane -- and don't be a jerk. It's not about the destination, it's about the journey. Enjoy the ride.