In the time I've owned my bike, I've backed my bike into exactly............Zero things. WTF?? How does one even do that? As a matter of fact, I've never backed any of my bikes into anything. Before I get on it, I look back there anyway. This is an attempt to solve a problem that doesn't exist.
Come on, give the guys a break, they've got an idea for a farkle and are looking for a reason an excuse to put it on the bike. Let them enjoy themselves. Or are you afraid, if it catches on, you won't be able to sneak up behind an errant rider going a little over the limit
?