Solar storms made GPS tractors miss their mark at the worst time for farmers - The Verge

Farmers had to stop planting their crops over the weekend as the strongest solar storms since 2003 battered the GPS satellites used by self-driving tractors

LandMark Implement, which owns John Deere dealerships in Kansas and Nebraska, warned farmers on Friday to turn off a feature that uses a fixed receiver to correct tractors’ paths. LandMark updated its post Saturday, saying it expects that when farmers tend crops later, “rows won’t be where the AutoPath lines think they are” and that it would be “difficult - if not impossible” for the self-driving tractor feature to work in fields planted while the GPS systems were hampered.