Could there be a My Summer Car in the future? Only via a homebrew demake. The PSP homebrew scene is still alive. A developer known as "Simeon" recently released a tech demo called Finland Simulator 1995 for the PSP, where you sit in a kitchen and drink coffee. That is the closest real code to MSC on the PSP.
If you are looking to play a game like My Summer Car or the unofficial port on your mobile, here are the avenues usually explored: my summer car ppsspp exclusive
Modders replace original car textures with the iconic rust-covered Satsuma. Could there be a My Summer Car in the future