Yesterday I had reason to travel to London, and the iPhone, with its iPod and its apps, came into it's own during my trip. On the drive down to Luton Parkway station I had it on the charger acting as a sat-nav unit through the google maps app. Setting a start and destination point, then using the GPS feature, it tracked my journey along the purple route (ok, so it didn't talk to me, but who needs that).
At Luton Parkway the MyRailLite app gave me all the info on the trains arriving and departing, making sure I was ready for the service to St Pancras.
Once in the capital a quick tube ride left me needing to cover the last 10 minutes on foot, and once again Google Maps and GPS showed me where I was and the route to my destination.
Vicinity told me the nearest drinking establishments to my location :-)
On the train back to Luton Parkway the game Labyrinth kept the wife entertained, and I used Stanza to read part of an ebook.
Of course throughout the day I was also able to check my email, and leave tweets on twitter through the tweetie app. And on the car journey back we listened to music through the iPod side of the phone. Oh, and I did make one phone call too! All achieved through one small hand-held device. Not bad at all.

