I read your post and saw that video clip. 500 horses and all you could do was snail it around a pole. I just find that odd when you say that video inspired you. Kind of like me saying hurricane Katrina inspired me, and then I go squeeze a tiny bit of wind in the loo.
Actually I wished the Non-insim version Tweak can save the settings done in the Single-car-editor, because it doesn't do so and only saves the Car-type-editor settings only.
If it allows us to save the settings made to the demo cars, tweaking and saving and sending it will be less of a job.
imo that engine is not enough, i tried something like that (yes, my brains are quite small if we r talkin about engines and stuff), but i think it was to light and it felt like rear wheels arent touching ground in some moments.