The Philips Pico USB memory key is one of the smallest USB keys available on the market.
Because of its size you can easily just leave it in the USB port of your laptop while travelling and use it with car radios equipped with a USB connector.
Super small: 1.5 x 2.3 x 0.8cm
Super-speed USB 3.0 (compatible with USB 2.0)
Reads up to 60MB/s Writes up to 10MB/s