Mine's easy.
I'd invent a gizmo that would be compulsorily fitted to ALL vehicles, that would render mobiles inoperable as long as the vehicle was in motion.
True story. Nipping down to London on the bike a couple of weeks ago we joined the motorway for the last few miles in. Nice posh Merc ahead of us, doing at least 70, and I could see that the drivers head kept dipping. Pulled alongside to overtake, and he was texting on his mobile! He was so engrossed in what he was doing that he didn't realise that we were alongside him for several seconds. If the vehicle in front had braked suddenly he'd never have seen it. He just smirked when I gave him the time-honoured 'wanker' hand gesture.
I wish I could say that it was an isolated incident, but we see dozens of people using their mobiles every time we go out. It makes me furious!
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