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The NASCAR Next Gen car is on the way for 2021, the current series now helping test a raft of modernizing updates to some components that can trace their roots back to the early 20th century. As Jalopnik notes, prime among them is a six-speed sequential transmission in transaxle configuration. Right now, NASCAR Cup cars use a four-speed H-pattern – the same Andrews A431 gearbox available in the Hendrick Motorsports Track Attack track-day cars. Bozi Tatarevic did some sleuthing for a report in Hagerty that pegged a modified Xtrac P1293 transaxle as the likely culprit. The same model is the spec gearbox for Australia's Supercars Championship, where it offers six gears in a compact package weighing less than 140 pounds, a max torque rating of 495 pound-feet, and plenty of adjustment and gear-swapping options.