F1 sensation Lewis Hamilton just purchased a custom license plate reading “LEW 1S” for $400,000. We say “invests” because the bloke who sold it to him bought the plate for just over $100,000 a few years earlier. Before you rush to cast aspersions on Mr. Hamilton, realize that it’s for his Swiss-based MB GL 450. This is relevant because Mr. Hamilton must save at least that amount of cash by claiming residency in the Alpine tax-haven. In a contrasting move, BMW-Sauber driver and Hamilton rival Nick Heidfeld is considering investing in a machine that would clean dirty water for poor people.