How Fast Is NASCAR?

NASCAR cars hit 320 km/h on superspeedways. They draft in tight packs at this speed — 36 cars just 30 cm apart, taking advantage of the slipstream effect. Any contact at speed is catastrophic; safety equipment has improved enormously since the early days.

36 NASCAR cars draft just 30 cm apart at 320 km/h — using the slipstream to multiply efficiency.

• Same as the falcon's stoop
• 36 cars draft 30 cm apart