Odd accident (not me)

[HikerToo_imp]

sounds like it flew into him (under his tire) with no warning, like a deer can at times.
That's why they call them accidents.

noun
1.
an unfortunate incident that happens unexpectedly and unintentionally, typically resulting in damage or injury.
synonyms: mishap, misadventure, unfortunate incident, mischance, misfortune, disaster, tragedy, catastrophe, calamity; technicalcasualty

synonyms: crash, collision, smash, bump, car crash; More
wreck;

2.
an event that happens by chance or that is without apparent or deliberate cause.
synonyms: (mere) chance, coincidence, twist of fate, freak; More