I wouldn't call it a sim in any way...
Its really fun though. You're going through the whole map through some checkpoints. Most of them are really twisty. You get like 10 cars for the offroad stuff, like 3 different Touaregs and 2 M classes, old Merc Rally cars, Fabia Ralley version...
I liked it a lot. And never forget, there were more than 200 addon cars for World Racing 1, like Koenigsegg, ALL Ferraris ever (more or less), Lambos... That's why I like it most. And because of the TopGear like drifting!