This lawsuit went all the way up to the Ohio Supreme Court. @Buckykatt you live in Ohio, correct?
For those across the pond, we are the United STATES, so each state has it's own laws and courts, subject to federal laws, of course.
TLDR: Landowner got tired of his mailbox being knocked down/demolished, whether by criminal behavior or just by accident, and constructed a very sturdy mailbox. Some guy ran into it and, as a result, became paralyzed and sued landowner for compensation. The lawsuit got escalated to the Ohio supreme court, and they found the landowner NOT liable.