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All you have to do to embarrass the salesman is to put a DAB radio and an FM radio side by side receiving the same station. Then ask him why the DAB is lagging about 2 seconds behind the FM. Superfast eh, Hmmm? There's also LESS information in a DAB broadcast (as the situation currently stands) as a lot of the sound is thrown away before transmission in order to keep the bandwidth low. ALL the information picked up by the microphone is present in an FM signal (up to 15 kHz). AND they've managed to confuse the transmission frequency with the deviation. Halfords should stick to go-faster stripes and smelly Christmas trees.