You know, of course, about I-695 and I-95 in the city - cancelled after residents from Hyde Park to Somerville raised holy hell and the governor canceled the plans and we got the Orange Line instead.

But a 1930 report by the Boston Planning Board (yes, back in the days when Boston had a planning board) proposed a series of new expressways and parkways, pretty much all with the purpose of speeding people downtown - in part through cross-town routes that would take traffic off the major routes downtown.

Matt Laskowski stitched together an interesting aerial view using some Microsoft Live overhead images to show how things have changed since the Central Artery was taken down.