“Are we there yet?” “Can you change the radio station” “Stop kicking my chair” “Please stop driving so close to the car in front” We have all been there, tensions high in the car as we head on our latest adventure or holiday during the summer break. With the average family set to spend about 3½ hours a week together driving on the roads during the holidays, new research from Britain shows our relationships could be tested to the limits. The figures by Renault show more than a fifth (21%) are having arguments for simple things like the driver going the wrong way, a further 20% squabbling over h…