can u track a vehicles travel online with software and onstar

OnStar does not offer an online or any other way to track your own
vehical unless you work for them. However there are some tools that
can acomplish this:

http://www.brickhousesecurity.com/gps-car-tracking-vehicle-logging.html

Those are some tools that help people track veicals. You may find
these links handy:
http://www.lojack.com/onstar.html
http://www.onstar.com/us_english/jsp/explore/onstar_basics/helpful_info.jsp?info-view=serv_plan

Notice in the second link it has this content:
"Stolen Vehicle Location Assistance
Q1. 	Will OnStar locate my spouse or someone who borrows my vehicle?
A1. 	No. OnStar will locate a vehicle only if it has been reported
stolen or a missing persons report is filed with the police. Then,
tracking will be performed only in conjunction with law enforcement
and only provided to the police.4

4Ability to locate vehicles varies with conditions."