I saw the R3x in person at the Seattle event - I was interested in the width (narrow garage). The R3X, measured by the iPhone Measure tool was 74" wide... Pacing it off I got something > 70" - so I'd trust it.
The other thing, those wheels and bumpers stick out an inch or two on each side - so...
I saw Dodge Omni when the R3 rolled out as well! Our family had one - I learned to drive a manual on it! It was a blast to drive...
I'd much rather have an R3 than that < 150 HP Omni. I'd go as far to say R3 is 'inspired' by that old look. In a good way.
It doesn't seem a full wheel (20") size smaller than the R2, but the shorter the better.
Was anyone allowed to measure the width at the event? Hoping it's a bit thinner than the R2.