Car Lighter-Socket 3-Way Splitter With USB Connector
Not sure if this has any real money off rrp as i cant find it elsewhere but seems cheap for what it is anyway.
For me it means i can plug by external bluetooth GPS module in AND my smartphone at the same time, 1 with usb and 1 with lighter attachment.
another 5% off with http://www.hotukdeals.com/deal/150189/5-discount-at-play-com/
and remember quidco.