The Garmin StreetPilot is a very good navigation app for your Windows Phone. But at $39.99 some may not be prepared to take a leap of faith. When first released (here's our review) StreetPilot did not have a trial version which made several hesitant to make such a leap.
Fortunately, Garmin has added a trial version to StreetPilot to allow everyone to try before they spend the $40. There's no details on how the trial version is limited. If Garmin follows suit with the other navigation apps, the trial will be fully functional but limited to how far you can route trips (10-15 mile range).
You can download your free trail of Garmin StreetPilot here (opens Zune) over at the Marketplace.
Thanks goes out to Vanessa for the tip!