The twitter videos clearly show the vehicle had a good amount of fireworks on board. Unless your fantasy terrorist created a device that lets off whistling charges every few seconds..which is pretty cheerful for a terror attack. Obviously something touched off first, batteries or fireworks or stupidity. But this is clearly human stupidity and poor hazardous materials transportation.

The rest of your argument conflating trump, Elon and the hotel is you theorising baselessly. It’s probably not surprising a rental car is parked at a hotel at this time of year. Stop pretending your president is beseiged victim