If you get to level 40 A-Spec, you'll be able to do that, over and over again, for 24 hours xD.
Seriously though, I agree with you. The Nürburgring track is one of the best Motorsport tracks ever designed, and one of the most challenging as well.
I've taken almost all of my current owned cars around the 24H layout, including the PD Kart, Fiat 500 and Kubelwagen. Trust me, nothing is more lolworthy than seeing the Kubelwagen struggling to go up the Ex-Mühle corner xD.
Oh, and taking an X2010 around the 24H layout is an amazing experience. My current best time around it is 5:22 
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"