FreeVolts is a CLI (Command-Line Interface) tool developed by rtt-tuxator for viewing worlds and cars of Re-Volt. As quoted from the website:
"A revival of the once-famous Acclaim's game Re-Volt, a RC cars racing game. We want to offer a free, portable (Windows & Unix), bug-free and enhanced, but multiplayer only, game engine to replace the original, while still using original data files."