FWIW: the above car is for sale at a local dealer wih low miles it says in the ad and it's CADILLAC CERTIFIED!!!
Standby aka Bob and I have debated this very point on more than one occasion and I agree with your assessment-being first (an innovator) cost's money.
In the end, I think the XLR is worth the money and will end up with a residual value after 3-4 year similiar to any other car--luxury or not. Depreciation is a funny thing but I think any one of us would buy our cars at the 55-60% residual value they will bring after 3-4 years. It's just the first dip that's the steepest.
I like mine and when they do some of the things we all want them to I'll buy another new one.
In the meantime I know of a nice used XLR-V that is CERTIFIED by the HELICOPTER POLICE out west to do over 150 on the straight away!!!
It's not an issue of paying too much, you just wanted to be one of the first - and that always has strings attached. Knowing that going in, you paid what you felt it was worth, so enjoy and let the late-comers stand in line to learn all of the little tricks the first-in-line owners know!