Hmm interesting, i dare say there staking it out john, id be careful, get the clublock out pull a couple of fuses, a kill switch or dead switch, a shotgun(oops thats illegal), a rotweiler.
That should be all i can think of, but will keep an eye out, im usually travelling before 9pm and after 5am around that area to and from work, so will keep a look out
Any idea on make or model of car they had? Color?