Everywhere I’ve driven people go ~10% above the limit because everyone knows the speedometer isn’t accurate (confirmed by those radar stations that report your

Everywhere I’ve driven people go ~10% above the limit because everyone knows the speedometer isn’t accurate (confirmed by those radar stations that report your speed live). Will this limiter use the true speed or the car's reported speed? I fear we will see many more overtakes as this limiter makes its way onto the roads.