Car audio veterans Blaupunkt have plans to release a new iPod-ready portable music system that can double as a subwoofer for your car. It's a decent bet that the sound quality will be quite good, but to be effective as a car subwoofer, it will likely weigh a ton. It uses a rechargeable battery with an optional in-car dock and is said to deliver 60 watts of maximum power (30 watts RMS). The MP3 player input is simply a stereo minijack input, so don't expect this thing to actually charge or integrate with your iPod.
Along with the minijack input, it also includes standard RCA inputs, high-level speaker inputs, an 18dB active crossover and silk dome neodymium tweeters. The Velocity-2-Go system is set to ship in a few weeks and will come in two flavors: one with 5.25-inch woofers and the other with 6.25-inch woofers, retailing at $399 and $449 respectively.