Ouch, stupid hidden garbage can! Wait, they killed trees to put in lamp posts? Stupid lamp posts too!
I understand that you don't need to rely on a cane most times or a dog, but seeing where it might help now and then in places and as a back up for certain jams is still interesting. Maybe now some dogs will be taught something new and specific to help somebody else out. :)
I think that a guide dog might actually work for being able to run with you while you're riding, and even really enjoy it so it doesn't seem that unfair. A lot of dog trainers have some dogs do that just for fun and because the dog is high energy enough that they need to burn it up with exercise. They also have dog "back packs" so there's extra weight for one to carry(when they need the exercise) so that could also be a help too. The dogs really are happy, their whole demeanor changes when you put a pack on them, they know they have something to do. Just like how sled dogs love to run, most "working dog" breeds really love having jobs and helping.

You'd be surprised how well they can handle traffic and lights too. The stray dogs in Russia always intrigued me because they were so street smart. For over 30 years they learned how to move through city traffic, use the streetlights better than humans do, and even ride the subways. Dogs are great at learning schedules, but these ones actually recognized their stops being called too. They've changed now from how they were before the Olympics there and a lot of negative things, but it used to be amazing when they were even treated with respect.