I took a look, and yeah, even the leaf-off imagery isn't helpful because of the evergreens. And some of these just barely show up on the USGS 3D Elevation Program data, so it's hard to say. I removed 1 driveway that I couldn't find support for, realigned a couple more, and left a fixme on one where I couldn't say one way or the other whether it exists. Probably will need street-level imagery to solve, but there's nothing in Bing or Mapillary. https://www.openstreetmap.org/changeset/171369607