I think you can fit any head unit you like with a facia adapter. It looks as if there are 2 DIN slots too, so I can just move my existing setup straight into the Smart. They do a factory upgrade of the speakers for £85, which improves the sounds no end.
It's pretty level on the poll so far, I find most people laugh when I say I'm thinking of getting one. I'm trying to put that at the back of my mind as it makes very good financial sense to buy one for the type of driving I do.
Basically, it's going to cost me £150 a month for 3 years using my car as the deposit, it does 60 to the gallon and only costs £88 to tax. It's the cheapest of my current options. They also hold their value very well, 3 year old ones are going for about £5k at the moment, thats loosing under a grand a year, the Corsa I'm looking at will loose about 2 every year.
I'll let you know how the test drive goes.
Cheers
Cris.