Piling onto this post, @Adamyounggolf has a ton of posts at his blog about optimizing angle of attack in the driver swing to drastically increase carry yardage. You don’t need insane clubhead speed to hit it far (though it helps). You need positive angle of attack, the right amount of spin, and solid contact.
From what I remember of Adam’s blog post, where he shared his lessons from a Trackman session, he was ‘only’ getting about 102-104 mph clubhead speed. But he coupled it with optimum smash (1.52+: it’s an artifact of how many systems measure clubhead speed), and like 9 degrees positive AoA, with appropriate spin. That equaled 280 or so carry.
It doesn’t take Jacobe what’s-his-name’s redonkulous speed to hit it farther. Just hit it more efficiently. For golfers with 80-90 mph chs, the required optimal launch angles are so high, I totally buy people saying they crush their 3W further.
Personally, I’m in my late 40s, and committing to meaningful, quantitative mindful practice has improved driver ball speed from 140-145 or so when I first got the monitor, to 150-155 ball speed, and occasional forays into 160+ land. Your body is pretty smart. Tell it to optimize some value, experiment with different movements, pay attention to what your senses are telling you, trying to duplicate good sensations, and your body will learn to move in a more coordinated, stronger manner. Which can translate into faster golf balls that go further.