Ask HN: How can I geek out my upcoming motorcycle trip?

Next weekend I'm going on a 4 day motorcycle trip through Arizona and Utah on a rented Harley Road Glide which provides me with a DC outlet and an mp3 player connector. I want to geek out this trip (without breaking the bank). I also have an iPhone 4g which should bring me 90% of the way there.

What do you guys think? Any tips for apps or sites I can use along the way? Would love something that could connect some friends at home with my ride (via pics/location/videos/etc).

Thanks!

ps; Here's the trip: http://bit.ly/mloHhJ