Big Rigs is so bad the only reason you can think of its existence as a commercial game is to inspire young programmers in believing that if this kind of game can hit the shelves, they too can become a profressional game coder.
It's supposed to be a racing game, but you don't really race anyone. There's no AI. Your opponent appears at the start of the racing line, but he doesn't move.
There are objects in the way, but you can drive right through them. This includes the bridge, as you'll fall right through it when driving across.
The fun doesn't stop there. If you get tired of following the path, you can drive right off - only the sky's your limit. And it isn't really a limit, because once you get off the terrain way off in the mountains, you can drive right off....into a blank, white space.
When in reversem there is no acceleration, and you can come to a sudden halt as soon as you release the key.
And did I mention that there's no sound? And the game crashes if you choose one of the five maps available to race on?
To cap it all off, when you finish the race, an on-screen trophy cup appears with the intelligently-written words, "YOU'RE WINNER!" highlighting how carefully the game was crafted. And if you feel you can't beat your opponents normally, even though they don't move,you can just cheat by reversing back to the starting line after you've crossed it, and then cross it again. Sometimes the game can't tell the difference.