i think your lobby to MA should include a totally new class to cater for the lovely little postie bike,
each race consisting of 1 hot lap of no less than 50 mailboxes within the confines of a local suburbian setting with mail of 50grams in weight being delivered to each one, square edged {gutter style} jumps and a quality selection of dogs without leashes, parked cars in front of, around and sometimes on top of said mailboxes could make it a little more interesting from the spectator view as well, so don't count that idea out. and my personal favourite, an asian learner driver looking for her friends house whilst doing her driver training.
i'm sure MA will welcome this idea with open arms as it's long overdue,
now, where do i get me a postie bike?