Because of our corner lot, my driveway is located around the corner, on the other side of the backyard. Where the driveway is located, it's covered by a old massive tree that tends to drop a lot of dirt (leaves, twigs, sap, etc.) that gets all over the cars. Also, the birds LOVE to perch in the tree and crap all over everything.
Instead of the more extreme options (building a garage, cutting down the tree, etc), I'm thinking of installing a sun shade sail (https://www.aliexpress.com/i/4000364014706.html) over top of the driveway (but under the tree) which I think might help keep things a little neater.
Other than the obvious (big branch falling, proper support posts for the sail), does anyone see an issue with this approach?