Wardriving is the act of searching for Wi-Fi wireless networks by a person in a moving vehicle, using a portable computer, smartphone or personal digital assistant (PDA).
Wardrivers use a Wifi-equipped device together with a GPS device to record the location of wireless networks.
The data is from the years 2005-2008 and my motivation was to find a open access point to check the emails.
The sniffer was always active during my measurement drives.