Cars are  easy to install and must be put into the    "....../revolt/cars" folder

The pic above  shows that the archive of taxi2 has been put into a folder/path  "taxi 2"

but the "/cars" path has not been saved in the zipping process.

To fix this prob you must select the cars folder in your revolt folder ( see below )

Installation

When you have double clicked on the zip file you download you will see winzip popup and display the
file list similar to that in the above pic.

press ctrl and A

this will highlight all the files in the archive.

Now if the files have the correct path like shown in the pic above then u are ready to extract them.

now press ctrl and E

This will activate the destination folder window shown in the pic below