I like the spirit of the idea, but let me play with it a bit.........
How about a liberal landscaped boulevard....... in which we plant highly endangered species that will immediately qualify the boulevard for some level of environmental protection, under both provincial and federal legislation.
Now, if we were to lay those plants out as dominant on one side of the boulevard, with the balance being more common and low value species, we could provide space for a future cycle track.......(or we could just lay one down now as a differential surfaced multi-use path.)
Lets see.......Oak Savannah boulevards............. Butternut Trees.............. PawPaw groves......... I'm liking it......