I am enjoying using StreetMix for sharing new street design ideas with others.
It would also be very helpful to have a similar tool to design protected intersections and phyically separated bike lanes on a street view from above. I can imagine saving a Google Earth image of a street and intersection and then having a tool that would superimpose a protected intersection and sidewalk / cycleway design on top of what is existing. This would help share these concepts with our local officials.
Thanks for what you do. Keep up the good work.