At the beginning of October I reviewed RoadTrips Google Maps mashup of RoadTweets' 50 Drives of a Lifetime. RoadTweets have now released their iPhone application.
The application allows you to capture and share your travel experiences from the road. RoadTweets was designed with the traveller in mind to make it easy to send tweets in as few steps as possible. For example, RoadTweets adds text and location information directly into your tweets, so you can update your followers without having to type any text. Simply tap 'send' and you're done! To edit or erase the text simply shake your iPhone and it disappears.
RoadTweets also lets you send photos of your Tweets using the popular TwitPic service. Oh, and it adds a location link that points to Google Maps!