I can hit low 30s on the Bike Friday Pocket Rocket but that seems to be the terminal velocity when descending a hill.

My 700c bike (Cinellli Hobootleg) seems to have a slightly higher terminal velocity. Or it reaches terminal velocity faster.

Maybe I need longer descents.

How about you?

Out of an airplane within the troposphere, just under 170mph (with a human attached)

I topped out my bike computer at 65 kph (about 40 mph) on a mild downgrade pedaling hard on the aeros of my 700c racer in top gear decades ago. I've only recently learned about speed wobble, but I think that bike might not have experienced it, it was Cannondale's stiffest frame, before they started thinning down later frames. I'm nervous to approach that speed on my 406 folder in terms of stability, I think the drag wouldn't be too bad, it has aero bars, but I'm limited in top gear to 85 gear inches, so like a heavy truck, I'd be "gear-limited" rather than "power-limited".

35 mph, downhill, before I slowed myself down. It was more than fast enough... It was on my Puma Nevis (700C, with a Shimano Nexus 8 speed high).