How far was that, a mile?
Top fuelers used to do 1/4 mile, but they shortened it to 1000 feet.
Wonder what would happen if you wound one out over a mile.
If the rate of acceleration was kept up over a mile, and nothing blew or otherwise killed you, you'd be flirting with Mach 2!
It'd take more chutes and shutdown track, that's for sure.
7mm
probably a 1/4