If the disc is a hybrid, then you'll get a standard 2-channel format for your car or standard CD player. I'm assuming here that you don't have a discrete 5.1 (or more) system in your car. There may not be much difference between THAT 2-channel sound and what you'l hear on the standard CD - it depends on the mastering, of course.
If you have a proper SACD decoder, and the disc is coded in multi-channel, then you'll hear it all in glorious discrete surround sound on your home theatre equipment.
If it comes out in a DVD-Audio format, then there will likely be a separate Dolby Digital 5.1 surround track that any standard DVD player can handle. The Corrs did this with IN BLUE DVD-A.
Harry
...not all that gung-ho on yet more playing formats, online...
If you have a proper SACD decoder, and the disc is coded in multi-channel, then you'll hear it all in glorious discrete surround sound on your home theatre equipment.
If it comes out in a DVD-Audio format, then there will likely be a separate Dolby Digital 5.1 surround track that any standard DVD player can handle. The Corrs did this with IN BLUE DVD-A.
Harry
...not all that gung-ho on yet more playing formats, online...