I suggest you don't open an arcade, but if you're insane enough to want to do so, here are a few things you should bear in mind.
What is the definition of a Classic Car? Is there an official definition? What do car associations judge to be Classics? These and other questions are dealt with in "Definition of a Classic Car, the...
Here's a simple electronics project. Learn to solder and build yourself a UV flashlight. Then you can go look for cool things with a flashlight you built.