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Twins Race to F1 Dream in British Formula 4
14 May
Summary
- Identical twins Cash and Roman Felber are 15 years old.
- They are entering their first British Formula 4 season.
- Twins use identical genetics to accelerate car setup.

Fifteen-year-old identical twins Cash and Roman Felber are on the cusp of their first season in British Formula 4. This move represents a significant step up from karting, demanding greater adaptability to higher speeds and increased G forces inherent in Formula 4 machinery. The twins have dedicated months to rigorous testing at renowned British tracks like Silverstone and Donington Park. These sessions involved intensive race simulations and setup refinements, focusing on improving lap consistency and reaction times. The unique advantage of their identical nature allows engineers to compare performance data with fewer variables, reportedly speeding up crucial car adjustments between testing periods and aiding their development. Their distinct driving styles, one aggressive and the other more controlled, further benefit the team in evaluating car balance. Extensive simulator work has also been integral to their preparation, shortening the adaptation time needed at race weekends. With testing concluded, the Felber twins are now fully focused on achieving success in their upcoming Formula 4 debut.