how many of you leave ur helmet hooked on the bike by the chinstrap? i have a 0 helmet so i think i will be carrying it everywhere. ps saw a guy lane splitting today while the cars were starting to move at lights, as he pulled into the left lane in front of a slow car he only just missed a car that was pulling into the left lane (from a side street )in front of the slow car- i wont be ever doing lane splitting in moving traffic!