When Jeremy did the lap, didn't he have like 3 other people in the car with him? And if I remember correctly, he wasn't even that serious. In a car like the Liana with that little power, I guess the extra weight, probably over 100kg, kind of makes a bigger difference than if they were in a more powerful car.
Jeremy is definitely a great driver. Sure, he won't be the next Michael Schumacher, but in terms of car control, I think he's definitely way above average. I mean, he's kept up with professional racecar drivers many times like that time with the Lancer chasing the lambo, and in the mini with the German Nurburgring Queen, etc. He's gone much faster than most tuner car street racers will ever dream of, if by enthusiast circle people mean individuals who're intrested in tuning their cars, then how many people in the enthusiast circle routinely have above 500 horsepowers to play with? and he's taken cars like the NSX around crazy tracks like the Leguna Seca, and not just on a playstation! People often forget that even on a Playststation, keeping a fast car like the NSX on the track is seriously hard work. XD
I think with that much experience, all he needs is someone like that retired F1 driver from last season who took 20 seconds off of James' lap time to get him to unlock all the potential and make him become much faster.