There is a lot of mixed information on the performance of the hacked toy radar speed checker. I am currently researching other ideas including fabricating something else. There is also a Ramsey kit that I linked to that may be a good alternative. Again, there are mixed reviews on that option stating issues such as signal noise. I would like to keep costs down, because my budget is basically things I already have, but I will just need to find a kit or toy and pull it apart and try. :)