I think the problem is the event is designed for caged targa cars, but the license for rallysprint allows L2S drivers in uncaged cars, allowing a driver to get a taste of the racing.
It's chock full of targa cars, so I don't think they will worry too much if the risk is too much for those of us with road going cars. This is the main reason I bought the GC8 as I wouldn't be a happy camper if I wrote off the Evo X at the track.
The concrete wasn't too much of an issue for me, but then again I drive pretty slow.
