It wasn't unbreakable, nobody was trying to break it. Nobody wants to risk multi-million dollar, one-of-a-kind race cars on that track just for bragging rights.
An unrestricted F1 car could've smashed the record at any point in the last 20 years.
An unrestricted F1 car could've smashed the record at any point in the last 20 years.
I wouldn't underestimate the kudos given to 'ring lap times, especially in the past few years. Admittedly mostly focused on lower categories rather than the outright record.
In order for an F1 car to beat this unrestricted LMP1 design it would have to wind up looking more like the LMP1 design than the F1 car it started as.
What I find impressive at any rate, is the motorcycle record of barely over 7 minutes.