[mithr]

Interesting, and it's cool to see an illustration of how weird it is that there's no quick way to cross the park! It takes the same ballpark amount of time to get from east 86th St & 2nd to Kew Gardens (~14 miles apart) as it does to get from east 86th & 2nd to west 86th St & Broadway (~1.5 miles apart)...

[CydeWeys]

There are buses running the transverses. I think this map only does subway. Check Google Maps transit directions and you'll see.