To enable the Freenove Smart Car Server to run at startup follow the steps for your distro.
Credit of Leigh Dastey (ldastey@outlook.com).
INSTALL_DIR below should be replaced throughout to the path of the file on your system
Edit $INSTALL_DIR/Service/smart-car-server and change $INSTALL_DIR to be the path of this file on your system
Then run the following commands:
sudo chmod 755 $INSTALL_DIR/Service/smart-car-server
sudo ln -s $INSTALL_DIR/Service/smart-car-server.service /lib/systemd/system/smart-car-server.service
sudo ln -s $INSTALL_DIR/Service/smart-car-server /etc/init.d/smart-car-server
sudo systemctl daemon-reload
sudo systemctl enable smart-car-server
sudo reboot
When the Pi restarts you will be able to connect client applications (i.e. mobile app) and test you can connect.
To disable the SystemD autostart run
sudo systemctl disable smart-car-server