With your foot planted, you then see what speed you can attain by the time you reach the crest of the hill.
The record is held by a Bentley Continental GT which I owned briefly
Simple .............but great fun.
As of today, Perth and Kinross have installed average speed cameras which measure your speed between the roundabout and Balhaldie/Little Chef Filling station.
I believe that this is part of the average speed camera programme which affects most of the A9 to Inversnecky
Take care..........
