This deal has ended.
Amazon again has the Kensington iPod Charger & FM Transmitter for $34.99, now after a $10 mail-in rebate valid through 5/14. This is $60-plus at most stores. Shipping is free and there is no sales tax (except KS, ND, WA). This charges your iPod and transmits it through your car's FM radio. Though many similar products have mediocre reviews, this is rated 4 of 5 by over 300 buyers.