What are the best ways to maintain a shiny car?

The best way to maintain the shine on your car is to treat it with a quality coating, such as a ceramic coating. This will not only seal in the shine, it will help improve it.

The one thing that which will degrade the shine on your car is washing and the wash marks it creates. Having a ceramic coating means your car stays cleaner for longer, so you will have to wash it less. When you do wash it, washing will be far easier because the dirt just falls off, so you are far less likely to introduce scratches which dull your paint.

With that said, as it's washing that degrades your car's finish, it makes sense to learn a washing technique which minimizes scratches.