Accually, You can play lfs on your.. well atleast iPhone 4, you can either use it as a game controller or see the screen and play with touch'pad'.. However your need to have your computer on.. And you need a remote, (I use Jumi Gamer, Search for it on google or just buy it on appstore.
'Upsides' (The good one's):
You are able to play LFS on your iPhone..
You no longer have to walk all the way to your computer to change songs..
You no longer need a wheel.. (However, i recommend it :razz
Downsides:
When playing with screen and everything, There will be a bit laggy, but seems to works fine, atleast for me. (Espc. over 3G)
Not the best kind of graphics
So that's a simple way to play LFS on your iPhone et.c
I've played around with it for a while, and i like to have the controller on the iPhone and using my computer screen.. Works pretty good acually..
Screenshot:
http://img851.imageshack.us/img851/858/img0508.png