It now works again.
The gearbox is a little goofy, the standard "Drag" and "Fire Drag" doesn't go over 1000 km/h. (600mph ish)
Though the stripped version will go over 1000.
I added more weight and an invisible spoiler on the invisible wheeliebar. (thx for the idea, [DJT] 5 Gaming)
I was slow with this fix and I'm sorry.