I don't think anyone said it was better to not bring a trailer. Lets say I drove from my house in Newcastle, to Bathurst. Raced the 12H in the GT4 class. Bar crashing out, completed the 12H and drove the thing home with no problems. That's a pretty remarkable feat. Even if a support vehicle towed a trailer with tools. It's nearly the same outcome if the car is crashed. Ride home with the support vehicle anyway. If someone takes their daily driver tontrack days, there is still the risk of crashing in the way to treacle and having a mishap at the track itself. I don't see the problem if the 620R was such a double duty car.