I still have one foot firmly planted in denial land myself. I think some gifted children prefer to drive slower despite the horsepower they have under the hood. They are like the old grannies driving under the speed limit in a big powerful car. Maybe it's fear, or maybe it's just they prefer the pace of 'normal' childhood.
Every once and a while, like during testing, they put the pedal to the metal because it's a safe and fun place to do it. Then they get these expensive speeding tickets we parents call test results.