I played it religiously for about 2 years. It was made in what, 1998, and is still to my eyes the best racing sim as far as realism goes, ever. The graphics have had some serious updates through the years, and the whole game is open source now, which means there are lots of upgrades.
I must say that this is the creme de la creme of racing sim's! Highly recommended to any car buff but especially someone that wants to know why everyone died in the 60's in F1. Seriously, you think a V8 Z is a handful, try a 1200lb car with 400hp, drum brakes on all 4 corners, with tall, narrow, crappy rubber!