No.
Why would I buy a stereo I can't listen to first?
Why would I buy a suspension I can't feel first?
Why would I buy a seat I can't sit in first?
This car has a lot of question marks around it. You'd have to be really rich or really faithful to choose options without any info about your choices.
I went through this 2 years ago with my Audi.
The A3 sedan was all-new....well, sorta, it's based off the current-generation Golf chassis, so I had an idea of what size it would ultimately be, but the step up from VW to Audi came with a few differences.
I knew the upgraded stereo would be a Bang and Olufsen, so I went with brand recognition/blind faith on that.
And by the time they had their "Meet the A3" event, mine was actually already on the production line, so I had already committed.
And it didn't matter anyway, because the model they used was a base model, so the suspension and seats I got to feel, and stereo I got to hear, didn't match up with what I had already paid for.
The only things that matched were engine and transmission, and wheel size.
I imagine you're going to see a mismatch from what they bring around as Model 3 test drivers, and what people order.
Luckily though, Teslas have "demo mode". Hopefully that will carry over to a Model 3, and they ship PxxD-L's to all of the galleries, and you can test drive the various configurations (because obviously the car can only recreate "lesser" configurations, so hopefully they send us maxed out models to test).
And still.....we wait.....