Watch onboard of PJ Groenke racing in PWC's TCB (B-Spec) class at Circuit of the Americas. You may need to click through to Vimeo to see it. Here's his summary of the weekend (video below). PJ Groenke: COTA Recap (open-wheels.com) https://vimeo.com/122234674
Very enjoyable in car. Oh for the want of 5 more horsepower. I found it surprising that the Mazda 2's pulled away.