Undercover, a Tesla Model 3 prototype with an updated look and new wheels has been discovered.

We first heard speculations about Tesla working on a new Model 3 late in 2018 and that it will arrive

According to rumours, the project's codename is "Highland."

Since a few years ago, Tesla has been incorporating its big casting technology into the Model Y,

 replacing hundreds of individual parts with a single large casting component.

With the Model Y compared to the Model 3, Tesla has been able to significantly increase production efficiency

Tesla, stated that the same technology will ultimately make its way to the Model 3, although he was unable to specify when.

The issue is that a temporary production slowdown from such a Model 3 upgrade would be unaffordable

But now that Model Y manufacturing is beginning to surpass that of the Model 3, it could be a smart idea for Tesla

A well camouflaged Model 3 prototype was seen being tested in California in December.