An Arduino Nano controls two relays which in turn can turn the car on, start it, and turn it off. Instead of adding a button for “push to start” he opted for a 13.56MHz RFID module.

Built as an educational demonstrator, this is a complete arithmetic-logic unit (ALU) using discrete relays — and not ... for visualization (using an Arduino for convenience) and IO forming ...

Finally, your Arduino toolkit will be incomplete if you ... it’s a good idea to grab a couple of motors and relay modules for ...