Why is the 'undercut' pit stop strategy more powerful at some tracks than others? Formula 1 strategists make race-changing decisions under huge pressure. How do they practice? What is a 'DRS train' and how does being in one change a driver's race?

Former Aston Martin Head of Race Strategy Bernie Collins answers these questions and more in a quickfire special.

Yiorgios in Greece, Carla in Kentucky, Luana in Switzerland, Chad in Tennessee, Katherine in Illinois, April in Toronto, John in Minnesota, Lennon in New Jersey and Ken in Ohio had their questions answered in this episode. Send yours to F1Explains@F1.com

You might find your answer in a previous episode:

How F1 teams stay fit, healthy + ready to race
Meet the mechanics in an F1 garage - with Kick Sauber
How F1 teams work - from factory to racetrack
LIVE at Silverstone with Mika Hakkinen + F1 Explains listeners
How F1 lap times are recorded - with an official F1 timekeeper
What F1 drivers eat - with Oscar Piastri's nutritionist, Dr Dan Martin
How F1 helmets are made - with Bell Racing
Ask a Formula 1 Driver – Liam Lawson answers your questions
Inside the FIA Safety Car - with driver, Bernd Mayländer
How F1 video games are so realistic - with EA SPORTS F124
LIVE in Miami with Guenther Steiner + F1 Explains listeners
Car setup with Fernando Alonso + Aston Martin
F1 race suits, boots, gloves + underwear - with PUMA
F1 brakes - technology + technique - with Brembo + Jack Doohan
The job of an F1 Team Principal - with Aston Martin's Mike Krack
Why F1 teammates are friends + foes - with Valtteri Bottas + Zhou Guanyu
How Formula 2 + Formula 3 prepare drivers for F1 - with Oscar Piastri
F1 Academy - with Susie Wolff + Lia Block
The F1 race start - with Mick Schumacher + strategist Bernie Collins
Behind the scenes on Drive to Survive - with Exec Producer James Gay-Rees
Why F1 pre-season testing matters - with Mercedes, McLaren + Alpine
How F1 teams build their new cars - with Aston Martin Technical Director Dan Fallows

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Bernie Collins explains powerful pit sto...