Bolivian Spanish word
trufi
Meaning: shared fixed-route taxi
How it is used in Bolivia
The everyday way to reach Samaipata from Santa Cruz. It 'sale cuando se llena' (leaves when full) which is exactly why your written 18:30 is a plan to reconfirm, not a printed timetable.
The workhorse of short Bolivian trips: a set route, a per-seat fare (Bs 10 per person to Cotoca in this story), and no clock, it leaves when it fills up.
A very Bolivian institution: cars or minivans running numbered fixed routes for a set fare, waved down at any corner along the way. In Cochabamba the trufi is the everyday way across town, cheaper than a taxi, nimbler than the micro.
Learn it in a real situation
Plan a Trip in Bolivia, Practical Spanish