I'd put 10% down if I could:
1. See final confirmed specs and ranges
2. Confirmed production timeline on single motor [the one I reserved]
3. A prototype test drive [This is a brand new type of vehicle, no telling if I can adjust to the blind spots, parking, etc. ]
Might be asking for a lot...
He confirmed that it would be 3% smaller. The main reason for the change was because it can't fit in the Boring Tunnel. Citing that the test drive through with Jay Leno was too "hair raising".