HardOCP has asked one of Intel's engineers a bunch of questions about Intel solid state drives, you can read the three-page long article over here. Here's a snip about the performance of SSDs in RAID-0:
Let me answer the second question first and point out that SSDs are already massively parallel. The current Intel SSDs use 10 parallel channels to access the flash media, so in a way, it's already a 10-way RAID-0 on the drive.
Doing RAID-0 with multiple SSDs works very well, but make sure your RAID card is up to the task. SSDs are individually capable of enormous amounts of throughput, potentially much more than the RAID controller was designed to handle.