That happened to me a long time ago in an Oldsmobile I had, but the windshield caught the rock. I drove along side the truck and noted the name of the truck and the company, but when I called them they blew it off.

I suppose it is a matter of proof, hard to get them to admit fault when there was no contact between the two vehicles, and so you should be glad of that at least.

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1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...

1995 E 420, 170k "The Red Plum" (sold)

2015 BMW 535i xdrive awd Stage 1 DINAN, 6k, <----364 hp

1967 Mercury Cougar, 49k

2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive (sold)