Usually they won't...they are not scanning the sky.

Roads are flytraps...they look good from a distance, but often have fences, lightpoles, powerlines, or other obstructions which will guarantee a cartwheel or worse.

Fields are best. If you are in a totally built up area, another option might be the flat roof of a large warehouse or shopping center, it will probably hold the weigh of an ASEL...just aim between the AC units.