I guess it is, but it would be by using the lock as designed, rather than by being careless. Either you have one bike per post, which is not efficient or enoug

I guess it is, but it would be by using the lock as designed, rather than by being careless. Either you have one bike per post, which is not efficient or enough, or you stack them. So basically, though it's an interesting idea, this design is very impractical.