If you click "Go To" written in a blue button, you will teleport into your car. If you are currently not using a car, then this button will not work, obviously because you have no car to go to. This button comes in handy when you are doing the Criminal or Law Enforcement jobs.
If you click "Spawn" written in a blue button, it will bring you to a selection of cars. The max cars you can have is four. It will show a car image with the background color being the color of your car, and then it will show the name of the car. Below that, it will show first the paint job, then the paint job of your wheels. If you click one of these cars, a blue message will pop up saying. "You car has been spawned. It is parked at the parking garage." or, if you have a house, it will say, "Your car has been spawned. It is parked at your house.". Now the go to button comes in handy, doesn't it? You can exit this by clicking < Back, written in blue.
The lights button written in blue will toggle the lights of your car on and off. This includes both the front lights, and the back. It is most useful to use this button at night, as it is very dark and harder to see. It will also show at the bottom if it is toggled on or off in bold.
The locks button written in blue will toggle your locks of your car on and off. This includes both the drivers seat, and the passengers seat. It is most useful to use this button when your not driving you car, so people can't take it. It will also show at the bottom if it is toggled on or off in bold.
The sell button written in blue will sell a car that you choose. If you click sell, a message will pop up reading, "Sell Car" then it will show the name of your car, (Example: Sports Car), and it will show the money you will get it you do sell this car. If you click "Cancel", then you will not sell your car and you will keep it. But, if you click "Sell", then it will sell your car. If you click the "Sell" button and you don't have a car, the screen will pop up, but all it will show is the price of $0, considering you can't sell your car anymore.
WARNING: If you sell your car, there is no way to get it back!
The paint button written in blue will bring you to an option to paint your car different colors. Currently, this button is grey, and you can't use it. You can only paint your car now when you first buy it in Spencer's Auto Sales.