This deal has ended.
Buy.com has the Kensington iPod Charger & FM Transmitter for only $38.29 after a $15 mail-in rebate valid through 9/2. Plus, new Google Checkout users can sign up and get a $10 off discount if you pay via that service. This is $60-plus at other stores. Shipping is free and there is no sales tax (except CA, MA, MD, TN). This charges your iPod and transmits it through your car's FM radio. It is rated 4.5 of 5 by 42 reviewers.