Hello,
should be no problem: Example is the init line should be [this,60] exec "carbomb.sqs" . Meaning "this" car should explode in 60 seconds. You have to do the following.
Give the car a name (under the unit proberties, for this example "car1") then make a trigger (radius 100 e.g.). Write in the trigger On activation [car1,60] exec "carbomb.sqs"
Greetings
Kuro