Yes they ARE using many vehicles [i wont say what types]. Yes they have P plates up too, and are wearing casual, or a vic police polo top with whatever they want. These are the only police members that can pull someone over without having to wear the reflective vests on public roads when out of their vehicle. Yes they are designed to target hoons too, and you wont notice they're a cop car like the unmarked cars.
Yea, people slow down, but for example, i was on the side of the road last night right after a bend in a 50km/h zone. A ford was coming along with a done up exhaust, i could hear him coming for about 5 or so seconds before the bend, then when he came round the bend and spotted the vehicle you could hear him back off the throttle through the exhaust sound. As he was driving past you could see the blue LEDs on the windscreen washers. Thing is they think that because a speed camera didn't catch them they have nothing to worry about, but that's not true, some speed cameras are setup with another chase vehicle around, all the officer in the speed camera setup needs to do is radio in a defectable car and the chase car can deal with it, and usually they go right back to speeding knowing that they missed the speed camera anyways because there wont be another one anywhere near.
Up until November last year i didn't get pulled over once or waived into a booze bus. Then late novemeber i got pulled over [not randomly] but wasn't charged because i argued. Then i got pulled over a few weeks ago for speeding, again luck enough to talk down the speeding fine so i didn't get an instant loss of licence. Other than that nothing at all, i've managed to also get someone else pulled over and defected, that was fun. :yeah:
There are a few more mobile cameras than just the wagons, they also like to use 4WD's [like over in St Albans they tend to use a honda mini 4WD from memory, i have to have another look next time to get what it is. They come in many many makes down here, and most people can't spot all of them without training.