Young Keith taking it quite seriously. Not everyone would have built their own machine to measure blood alcohol levels, to ensure he's safe to drive without ever missing an opportunity to top up. I'm not saying it's a good idea. I don't think he'll ever get a licence for it. But he's putting in the patent application anyway. He says it's what expectant fathers all over the country have been waiting for. And he's verifiably below the legal limit. (Or, at least, he was until he got home from this bit of excitement).