I have a mobile APRS station in my car, the map here shows the most recent location information as transmitted by my car. Around Seattle I have been using 9600 baud packet radio on UHF 440.800 lately with very good results.
Additionally my weather station at home transmits data into APRS-IS (only via TCPIP) as KK7U-1 which you can view online at any APRS data viewing web site.
I enjoy the features and Google maps integration at http://aprs.fi for viewing APRS data.