"Destroy the Van" is an objective in the story mission Caida Libre in Grand Theft Auto V.
Walkthrough[edit]
Drive the van out and away from the observatory. Once you see the objective change (side roads are a good choice to prompt this) then step on out of the van. Michael automatically has the Jerry can equipped. Pour the gas on out leading away from the van. Get a good trail then shoot it with any gun to lit up the van. Alternatively, lob a grenade or sticky bomb at it.
Head onto the road and grab a car. Trevor will phone Mike and tell him to meet him at the Old Cement Factory instead of Madrazo's place.