An added bonus is that while you happen to be in cover, operating, or driving, you can spam snacks without having waiting for the consuming animation to play. All in Order - Play all of the Heists and their setup missions in order for a $1,000,000 bonus.
Beginning Headhunter and Sightseer at the warehouse just after you delivered the crates and driving back to the Buzzard will currently use up time thus you are going to earn much more money completing them the far more time you take. It'll take around two minutes to drive from the warehouse to your Buzzard so these additional two minutes will earn you an additional $500 per minute which in this case is $1,000.
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