Spool Bus

A sleeper car built out a large truck, van, or SUV. Spool refers to a Turbocharger, the power adder modification most of these vehicles use.

Ferrari: ha, look at the slow-ass Tahoe
Tahoe: *is fast as fuck*
Ferrari: WTF, must be a spool bus

by icantthinkofausername777 May 1, 2019

spool bus

A badass lifted duramax diesel truck.

Wow look at streepspeed717's spool bus

by Whiskey tango alpha foxtrot December 13, 2016