Since (A) the Las Vegas vehicle did not explode - at all - I’m waiting for a reputable source to say the Vegas one had “explosives”. At best, the video sounds like possible fireworks, also deflagration, not explosion.
https://youtu.be/HLgKKKWDJF0?si=eRWipHRDMJ08Qltc at 1:07.
I Googled "Cybertruck exploding" and it came up. It took 5 or maybe 10 seconds.
Are you trying to quibble over whether the car itself exploded? If so, what point are you trying to make?
What killed the occupant?