Before everyone gets to carried away with those pie in the sky HP numbers. I think you should seriously think about this. The XLR is GM's "Luxury Performance" roadster, it is not a solid top coupe.
The XLR is for someone that is willing to give up some of the great feel and handling of the C5, remember the XLR was designed as the C5 in a tuxedo. That is why Hp numbers were kept below those of the C5. You may want to use that thought process when comparing the XLR v to those of the later coming C6 z06.
True enough. But, this is also suppose to be a statement car. Cadillac has in developement a v12 that will be in the Escalade in 06 and they have shown off a v16 as well as a super car. While it is only rumor, it is believed that those engines are going to fined there way into cars. Cadillac wants a performance division with the V series, so if you are going that route, you have to go big.
But then where are they going to put the V12 that they are currently getting ready to put into production? Is it only for the Escalade? I don't think so. Cadillac is going to be the GM High Line. That means Horsepower as well as luxury. They have not spent all this development dollars for a truck engine.