“Hovercar Simulator” is an unfinished racing game by José Oliveira and Ricardo Silva.

Info from Planeta Sinclair:
If Alea was a finished product, with a lot of quality, let’s say, Eros, unfortunately, was a game that was only in a very embryonic phase.
On the other hand, Hovercar Simulator is in the middle of the two.
On the one hand, the game is complete, with the four levels completed, but on the other hand, the “finishes” were missing, and that in this case could have been the difference between having been officially released or not, as was the case.

In 1989, José Oliveira and Ricardo Silva developed Hovercar Simulator.
The word “simulator” in the title is not innocent, implying that the addressee would be “Code Masters”, known for using this word in most of their games.
In fact, the game was sent to this publisher, who analysed it and, in a cordial letter, indicated some points that could be improved, in order to make it a saleable product.
Graphically, the game also looks like some others from this publisher.
A peculiarity is the fact that the loading screen has 1991 as the year of the game’s creation, however there is a simple reason for this: despite having been programmed in 1989, in 1990 José Oliveira went to the army, with a hiatus of one year until the two authors picked up the game again and added the loading screen.