For one, everything would be bolted down with the bolts torqued to spec, instead of just strong enough to hold things together for a demonstration run.
Also things tend to rust and taking oxidized stuff apart without breaking it takes quite a bit of time and preparation, sometimes multiple days (if the part is precious enough, for instance on classics it can definitely be worth the extra effort).
Then there's the accessibility of parts, this is a ladder chassis car, which means that the chassis and the body are two separate parts. That makes for a vehicle that is very easy to disassemble at the expense of a higher weight (and so reduced fuel economy) higher manufacturing expense and less safety in the case of an accident.
So you'd never ever get this kind of performance in real life situations.
When I saw this, I imagined doing the same thing (alone) with my old 1987 Toyota pickup. It is difficult for one person to completely remove the body (I've had to raise it by myself to install body spacers) from the frame, but once the body is off, the rest of the truck would disassemble easily. Most of the effort is dealing with rusted/frozen fasteners. The rest of the vehicle comes apart fairly easily. Working on these older, simpler vehicles is pretty straightforward.
Contrast with my 350Z: it would take days to accomplish the same thing. Much more integrated system and access is more difficult.
For one, everything would be bolted down with the bolts torqued to spec, instead of just strong enough to hold things together for a demonstration run.
Also things tend to rust and taking oxidized stuff apart without breaking it takes quite a bit of time and preparation, sometimes multiple days (if the part is precious enough, for instance on classics it can definitely be worth the extra effort).
Then there's the accessibility of parts, this is a ladder chassis car, which means that the chassis and the body are two separate parts. That makes for a vehicle that is very easy to disassemble at the expense of a higher weight (and so reduced fuel economy) higher manufacturing expense and less safety in the case of an accident.
So you'd never ever get this kind of performance in real life situations.