Parabolic banked curve bridge paver constructing an automotive test track.
https://diqn32j8nouaz.cloudfront.net...g_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...884#post140481
https://www.homemadetools.net/forum/...802#post133311
https://www.homemadetools.net/forum/...029#post217649
https://www.homemadetools.net/forum/...900#post198678
https://www.homemadetools.net/forum/...094#post153543
