Time is not seen as a dimenson by everybody (not even by Einstein himself, if memory serves). This makes the "diversion"-idea quite troublesome (or awkward). Even the "diversion" thought itself doesn't make things any transparent: Given space dimensions, a time "dimension" is necessarily something entirely different and cannot be compared 1 to 1.

This is like a moment of Wow, for me.

I don't think you need the concept of time dimension here nor the two dimensional car example here. The equation is simply saying "as I see your motion through space increase I see your motion through time decrease". Decreasing motion through time is precisely the concept of time dilation.

Spacetime as an invariant with boundaries on causality and therefore also on effect. Where Einsteinians improved upon Newtonian and Galilean limits. Light like separations, therefore boundaries on light. Asª (a=2) = spacetime invariant, but the first leg of the capital A needs removal.- device limits. Life of a sad device? 🙄😷