It plays like music to the ears or candy to the eyes. Soon hopefully the black puffing diesel transports and buses found on the streets today will end up as exhibits in the Smithsonian. People should look back incredulously at this period, probably not so differently to what people feel now when looking back at the Industrial Revolution, with all the grime and disease that era produced. People will be less of a menace to the planet, choosing to get around on their e-bikes or electric cars instead of F-150s or diesel powered VWs.