All the Ultima's I've seen (at trackdays) have been very slow. I think the owners were just too scared of the power they had under their foot.

That's probably it, since I had a good bit of fun dancing with an Ultima at Sears Point. He was obviously more comfortable driving his own Ultima that I was driving my boss' F50, but we were both hustling pretty good.

But I had as much fun driving the Birkin (another 7 clone) as the F50 (though I didn't attract quite the attention )