Did my first test drive of my 818 yesterday. Other than a complete loss of brakes, it went pretty well. The brakes were bad right from the start. found lots of air in the system when I got it back home. I took it to a large parking lot near my house and just drove it back and forth. The parking lot is large enough for me to get it up to about 45 miles an hour. Seemed to run ad perform pretty good. Never overheated. Turning radius is horrible. Need to work on that. Overall I am pretty happy. Still not the "kick in the pants" of my Z06 but pretty fast.
Mike