Cricket Australia is trialling new speed-gun technology, which has already produced results that should send a shiver down the spines of England's inexperienced batting line-up.
If England thought Mitchell Starc and Pat Cummins were the only two quicks capable of hitting high-speeds, they had better think again.
The other member of Australia's terrifying trio of quicks, Josh Hazlewood, broke the 140km/h barrier during the last round of Sheffield Shield games, according to data gathered by TrackMan - a piece of 3D ball-flight measurement equipment produced in Denmark.
The device, which is used primarily in baseball but not in Australian cricket, also tracked Cummins and Starc as averaging above 140km/h throughout the game, while Hazlewood's mean was around the 135km/h mark.
There will be little respite for England's batsmen, several of whom have not played a Test on these shores, if the tearaway quicks can reproduce these figures at the Gabba.
England's batsmen have made an underwhelming start to the tour with no bat reaching triple figures in the warm-up matches against development teams.
But Australia's likely Test attack were topped for speed by Western Australia's Jhye Richardson, 21, who was clocked at 148km/h in a fiery spell to national captain Steve Smith.
Hazlewood's haul of six wickets from 33 overs was enough to convince selectors and coaches he had found enough form and match practice to warrant being put on ice next week.
Instead of playing a second match in the shield, Hazlewood will join Starc and Cummins for a training camp at CA's National Cricket Centre in Brisbane to fine-tune his preparation for the first Test starting in a fortnight's time.
Also drafted in was seamer Jackson Bird, in a strong sign the Tasmania seamer is the selectors' No.1 back-up if any of the frontline quicks break down.
Bird's inclusion is reward for his strong start to the season, which has produced 10 wickets at 22.8 despite Tasmania's poor form.
The 30-year-old has not worn the baggy green since last year's Boxing Day Test but has been around the fringes of the national team.
He was part of Australia's tours to Bangladesh, India, Sri Lanka and New Zealand, but played only twice.
His chances of adding to his eight Tests are likely to be determined by the wellbeing of Starc, Hazlewood and Cummins, who will be Smith's biggest weapons in the quest to regain the urn.
CA is looking to implement speed guns at all shield matches in a bid to gather more information about its fast bowlers.
Up until now, it was not until a bowler reached the international stage, where matches are broadcast on TV, that CA could accurately gauge their speed.
That is somewhat of a surprise given selectors have placed a premium on picking express-paced quicks at the expense of swingmen, such as Chadd Sayers, who rely on guile more than speed for their wickets.
Several states have used another speed gun, the Stalker Pro II, to measure the pace of their quicks at training, but there is a belief they are relying more on "gut feel" in games.
The numbers gathered by TrackMan and the Stalker Pro II are said to be extremely close, though the former also measures revolutions on balls delivered by spinners.
It's unclear which technology CA will use, if any, but its reliability and how practically it can be implemented are key factors.