FINALLY someone has made a Weatherproof USB power socket that will plug right into a BMW style plug so you can charge/power your mobile electronics.
Powerlet has just released their PAC-069 Powerlet to Dual USB 2.1A Adapter.
With this solution you can convert a Powerlet socket to two USB Type A Connectors. Provides 2.1 Amp charging ports with weather proof cover.
The waterproof unit has a low profile design that is glove friendly and allows for fast charging of multiple devices. Works great with tablets and smartphones (iPad, Android, Galaxy, others), MP3s, and GPS.