The 3D graphics of this game have aged really well and it still looks really nice. And the game is still absolutely addictive.
So I still play it and I still enjoy it. The only thing I have found problematic is the power-up system. As the touch controls are not really great for a racing game, it is even more of a problem there as the steering is also 'aiming' and the 'launch' button for powerups is operated with the same finger as the steering. However, I did discover one option that I did not know about, and that is the ability to completely disable powerups in-game. And that was something I needed to know when I played the games twenty years ago.
Now the game is absolutely brilliant. I enjoy every single race, which is now pure racing and not just the random luck of not getting hit by a rocket or splash ball.
For the first time I am going through the whole career and unlocking the cars, races and championships. Without the power-ups, it is a real racing experience and I am really enjoying it. So no more "CARNIVAL" and "TRACKER" cheats. Just progress.
I also downloaded some new tracks and cars. I really enjoy driving an RC car based on my favourite real racing car - the Tyrrell P34. It was the six-wheeled Formula 1 car. Bizarre but beautiful.
The only thing I still cannot solve is that some of the custom added tracks do not load correctly. They are missing textures or have a bit of texture glitch. I am still trying to find out what the problem is. I am thinking about the problems with copying files to the tablet, which is not so likely. More likely it is a problem with the small memory of the tablet, which may not be able to load larger levels.
I might be able to fix it and play all the tracks I want, but even if not, most of them still work, so I have enough tracks to play.
Here are some screenshots of the added content:

Jan "Jenkings" Škoda - blog
Simplifying IT, Amplifying Knowledge