Starting a vintage Formula 1 car (V-10) can take up to 2-hours of prep.

[Hotler]

'Starting a regular road car is as simple as getting in and pressing a button or turning a key. Starting a Formula 1 car is another thing entirely, with the process requiring serious equipment and hours of work. The latter is especially true if the F1 car is a vintage one.'
https://www.thedrive.com/news/heres-why-firing-up-an-old-f1-car-can-take-hours