I dropped my vote of "4" in. After the ride today, I figure I have the cred.
Why not a 5? It's a version 1.0, and it will have bugs. I fully expect this, and I'm ready to handle them. But, holy crap, this is a solid, solid, solid machine for a version 1.0 of a... uh.... anything.
If there were a few more features to go head-to-head with similar sized performance sedans (lane change warnings, auto-stop for safety, etc), then I'd give the 5. I get that Tesla had to make choices - reasoned compromises - to get the performance and price to balance, and that's perfect. Tesla is doing the job right. I'm giving honest feedback to further the development, further the advances, and keep the momentum going.
I'm so ready to be an owner now. So ready...