Of course it can be used as a speed camera, it can be used to catch idiotic car drivers as well. So can all highway patrol cars. However if money is all the fuzz are worring about it is a tremendous waste to spend all that on what amounts to an un-marked patrol bike. A speed camera van would make greater revenue...

Am no saint myself, but I think that hostility is the wrong way to go. Cameras catch speeders but miss tail-gating, mobile phones, erratic behaviour etc... these need patrol vehicles and coppers with a bit of common sense.