OK, Motorola evidently believe a dynamo-powered mobile phone charger is a good idea for cyclists. They're even bringing out a Motorola branded bike with the kit - see here
, and here
But do we really want mobile use to be as prevalent among cyclists as drivers? It isn't safe for drivers and I can't see it being safe for cyclists either (OK, I might be able to get away with it, sometimes, but I don't have to balance).
Having said that, if I ever do get the one phone/pda/gps device to serve as the one gadget I need to get around, being able to power it in transit would be useful.