For Daytona/Talladega, do draft laps in-race count as opposed to single-car time trials? In single race mode for example, at Daytona, the fastest you can run in a single car time trial is roughly a 46.7 on a good day with the Preset 6/7 cheat allowing you more revs. During the race, all goes well and a draft is present, a 46 second lap is possible, or even faster.
Additionally, I also support a separation between Career/Single laps. The sheer amount of grinding necessary to get a perfect 100 car in Career is mind-boggling, even if the races are at 5 percent with caution flags. The single race cars are roughly a 75-ish equivalent in Career, and are easily 4-7 percent slower on all race tracks. This is not to dismiss TheBluestEye and his accomplishments, I love watching those runs on YouTube. However, for the common player who may have jumped into Thunder 2003 for the first time as either a casual stander-by or intrigued by the Thunder 2000 mod, there should be clear expectations that while these fast laps aren't "cheats", you must work A LOT to get there.