Giancarlo and Juan Pablo, at what age would you want your sons to start karting and Michael and Jarno why are you not keen?

• 问:吉安卡罗和胡安-保罗；你们希望你们的儿子几岁开始开卡丁车.；迈克尔和亚诺；为什么你们并不对此抱以热切希望?