This game sounds a bit like FIFA - loads of great stuff, but ultimately, a struggle to find a mode that is actually fun to play.
Crap against the AI because they're either too good on top level (ie. cheat the laws of physics), but below that level, not worth racing against....just like FIFA.
Crap online because every race is just super fast cars, so they may as well not have put 90% of the cars in the game, as nobody can race competitively online with them, just like the endless fully-assisted Real/Barca/ManU matches in FIFA.
Glad I didn't buy this now as, just like FIFA, it's a case of so near, yet so far. Fundamental design flaws let down all the good work.