That didn’t look like a 3000hp run to me.
I spent many years working in and operating automotive test cells powered by Cummins diesels ranging from 600 to 1200 horse power. Entering a test cell when under power is a no, no. I have seen rods and driveline’s come apart and embed in concrete walls.
The fact that this engine is extremely modified is even more reason to stay out.
Under full power the noise & vibration goes right through you and ear plugs and ear muffs would be insufficient, you would not be able to hear him talk!!! There would also have been fire & smoke.
Detroit’s scream, we tested a 552hp turbo supercharged 6v92 in the 80’s and that 24 cylinder didn’t sound like it was brought up much more than an idle.
Loading an engine to 3000+hp takes more than a few seconds.
A full power run would have been monitored from a control room.
This looked like an exhibition run to me, but I still liked it!!!