I don't know what wireless device may be available. I used to use an Optex 1000 wireless PIR for vehicle detection, but the deer and foxes gave me too many false alarms.
I have a Mier vehicle detector buried along side my drive about 150' out from the house. The drive is around 250' long. I connect the relay output of the Mier to a zone input on the M1G and assign it to a separate "area" (partition) in the M1G. It is defined as type #13, 24 hour alarm zone. A rule speaks a voice message and sounds an 800 hz tone when it is activated. It is recorded in the M1G event log. I also print this as well as several other events out on a point of sale printer I picked up on eBay. This gives me a written log of alarms, arm/disarm, and detection of certain zones.
The only problem I experience is during severe lightning storms I sometimes get a false or two on the drive alarm. I used shielded cable, but it isn't 100% effective in my case.
I also have a couple rules that turn on the 3 front lights if a vehicle is detected in the evening, then return them back to 30% brightness after a period of time.