The Vehicle Shop allows you to buy your own Vehicles wich you can spawn at anytime using the F2 menu. The Vehicle Shop also allows you to customise your vehicles and to tune your Super Cars. There are several Vehicle Shop on the map which are shown as 
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There are around 130 vehicles to buy at various prices. You can customise a vehicle that you already own using the alterations buttons, you will be able to change the color of the vehicle, the color of the lights, add various elements like spoilers, and more.
When buying a vehicle you have the option to "add all upgrades", if you do it will add nitro to your vehicle. When spawning your vehicle you will be able to use the nitro 10 times then you will have to respawn your vehicle if you wish more.
The Vehicle Shop also allows you to tune your Super Cars.