You can get really nice data from the logs after tracking the car.
That said, you'll probably be disappointed in the Roadster on the track. It doesn't have sufficient cooling to run full-on for very long, so it overheats (PEM in 1.5, motor in 2.0+) and cuts back torque, which is about as frustrating as you might imagine. I was driving on a track with an instructor after he'd experienced the car before it overheated (which is wonderful), and when it got hot he asked me "is that all it's got?" My answer was "Yeah, it drives like a 30-year old Fiat now."