I love micromachine / hot wheels type games
but can i use diffrent style like generic track race or something?

Yes, there's only one requirement the race track must be in your home but if you want e.g. make a race track randomly generated and you can't place it in your home just add randomly generated objects from your house on the track. There must me a "your home" theme.

Obviously best option is placing generic track race in your room.