If like me you miss Radio 6Music when out in the motor, can I recommend this little Bush Personal DAB radio made excelusively for Argos.
It's a very small little unit, about 4" x 1.5" x 1"
Micro USB clicks in one end, phono the other. WIll also do FM if you want but not nearly as good reception as the DAB.
I wanted something to work with a small 12v amp and speaker in the landrover. The FM module in the amp is OK but signal was ropey. I bought this from the Argos eBay store as a bit of a stab in the dark, but blow me it works brilliantly. I was worried that the signal reception from the phono cable inside the car would be rubbish, it's surprisingly good. I cant vouch every car will work as well, but if you have an auxiliary/phono input on your head unit and you want to add DAB cheaply, this works as well if not better than those small Pure units. Charges from USB but will run for 5 hours unplugged. Also handy for catching 5Live Sports Extra TdF reports when out and about.