Test Drive Unlimited Solar Crown has a large collection of cars that you can buy and add to your garage. The game also has a cool Easter Egg called Secret Car Wrecks that works like a treasure hunt. Collect all the pieces and you can unlock two secret cars to add to your collection.

There are 14 districts on Hong Island in Test Drive Unlimited Solar Crown. While most districts have two secret car wrecks each, some only have one or even three. I have listed all the districts alphabetically and the exact location of the secret cars. Collect 14 wrecks for the classic and off-road cars to permanently unlock them.

I found a secret 4×4 wreck at the Aberdeen East gas station at the location shown above.

Note: Look at the images and if confused use the proximity alarm "wreck nearby" above the minimap to locate the cars. The beeping becomes more intense when you are close.