I am not a farmer, but am interested in watching the development of agricultural tech.

>> I can't see any good way to harvest a field with solar panels that isn't so inefficiently laid out that it would be better to have two separate fields.

Would there be scope for smaller autonomous machines? Presumably, there should be some crop configurations that could benefit, but we don't yet have all the results of experiments currently running. Here in Japan, farms are typically much smaller, so there's perhaps greater scope for agrivoltaics than in industrial scale farms in USA.