This GIF shows a Tesla Model S morphing into a Tesla Model 3.
Tesla says the Model 3 is ~20% smaller than the S, but as this GIF shows us, much of the reduced size is limited to just the front and rear overhangs it seems.
The cabin size appears very similar between the 3 and the S.
Here are two images captured from the GIF above.
Tesla Model S:
Tesla Model S
Tesla Model 3:
The GIF was created by Reddit user Qeng-Ho.
Source: Tech Insider