The tour presentation has been reworked some time ago, but unfortunately this only works for users with Firefox or Chrome. There, however, the tour is about 10 times faster and customers with open orders are highlighted (yellow border to the number).
The tour logs display now also includes an estimate of the distance. Generally speaking that number will be smaller than the real distance. With an individual correction factor, which you have to calculate for yourself, you can save yourself the trip to the speedometer of the cars.