You absolutely nailed the graphics spot on, it feels like I'm back playing old DS games like Transformers Autobots or Transformers War on Cybertron Autobots!
Issues
I will mention is for one the audio, the sound seems to respond more towards the input of the player than rather the speed of the car, I'm sorry if that's a bit picky. It was also a little difficult to move around, the controls were fine just felt odd one minute you're going like 100MPH then suddenly you're at Mach 10, finally the turning when you're at a high speed is really sensitive, it took barely any input on the A or D key at a high speed to just take a super sharp turn into a wall which made some spots of the map hard to move around at a high speed.
Overall
Heavily enjoyed the nostalgia of being back on what feels like a classic DS title, definitely be proud of nailing that art style, it was just exactly on point! Keep up the good work!