My wife and I are in the midst of planning a move from Texas to Boston, MA (coming up at the end of August). We have decided to rent a truck and drive it ourselves, hoping to make a few fun stops along the way (i.e. Niagara Falls). We had just begun looking into various rental companies when we discovered, to our horror, that most of these trucks do not come with cassette players (in which we would use tapes and/or our tape adapter in conjunction with iBook and iPod). The thought of driving 30+ hrs with no music of our own, only the radio, sounds miserable. Therefore, we're now looking into a set of portable speakers. My major concern is that I'd like a sturdy set that can produce enough sound to get up over the sound of the engine and road. Does anyone have any suggestions? At the moment I'm looking at Monster's iSpeaker? I like the design (at least the form factor), and the brand is well-respected. Anyone have experience with this product. In case it matters--the iPod is 1st Gen...so no docking allowed! Thanks!