Spawn the car which you want to remote control (obviously only works with simfphys cars)

First select the tool/gun. Hey did you notice that weapon description there btw. lel

Then point it at your simfphys™ car and press your PRIMARY ATTACK KEY (usually left mouse button)
Congratulations you have linked it! (you get a message at the bottom left)



After you did that (i know, i know it's hard but it's a crucial part!) simply press your USE key (usually the E key on your keyboard)
Congratulations you are now remote controlling your car :D!