Definitions by Unkanow

a hot air balloon going Mach 10 

A typical sight in Airforceproud95 videos, alongside other aircraft also going nearly at Mach 10.

"Is it possible to see a hot air balloon going Mach 10 IRL?"
"Nah fam."

a hot air balloon going Mach 10 by Unkanow April 15, 2020