turn by turn, speaks directions and street names
16+ million POI
Full Route Corridor Download: Quick route re-calculation for missed turns as
well provides continued service in areas of no cellular coverage.
貌似是提前可以下载地图，很好，MotionX GPS Drive早就应该做这个功能。这下有竞
争了，估计下一版MotionX就会支持了。
Traffic Incident Based Routing
Navigon的交通信息要$25 life time。这个直接包含。MotionX也自称routing包含交通
信息。
软件只有2.9MB
节省很多空间。
怀疑street name也是网上下载的声音文件。
$0.99 14 day trial
$3.99/30day
$9.99/3 month
$29.99/year
比MotionX稍贵。
