Well we tried out the Lap wizard yesterday..unfortunately rain got the better of us and only managed to test a few packs.
For the sensor mount on the car it is best to mount as high as possible...almost to the roof line!
In personal mode (ie 1 car) it behaves very much like the Orion. ie. the clock starts when you first pass the sensor, or you can start the clock with a button.
The small black sensor box was mounted about 6 inches off the ground and seemed to be happy there. Because there is a wire feed to the display module you can pick this up and read (or play) when the cars are running.
For race, we only managed to try out 2 cars at a time...rain stopped play!
However, managed to find out that if 2 cars are running side by side as they cross the sensor..you will get no reading (not a surprise since it is IR). However, even if the 2 cars are head to toe as they cross the sensor, then it will pick up both signals.
If there is another car not running a sensor that gets in the way of a sensor car then it will still pick up a signal.
Overall the unit was very consistent...once you played around with the car sensor positioning and where to put the sensor on the track.
Pretty impressive bit of kit....for 1/10th of the price of the AMB....although it is not really comparing apples with apples!!