Imagine if you where related to a 16 year old that has been driving for 2 years on tracks and has driven things like Porsche Carrera 4's and powerful Mercedes. Would you trust them to drive your Nissan GTR around the track that they know well and can drive round in a 2.0 Clio faster than you can?
The track would be surrounded by grass so it's not as if they could smash it up...