I was thinking today, what is the actual point of an exhaust?
Why can't we just have a pipe going out the front of a car instead of taking all the gases to the back of the car?
I can only see disadvantages of the current design:
The expense of manufacturing a long metal pipe, which has to be the length of the car. It would be a lot cheaper to make it come out at the front or the side
More to repair. Loads of old cars have leaking exhausts, and are always a nightmare to find and are expensive to fix. It would be easier to move the exhaust to the side or front and shorten it
Added weight means more fuel consumption
Repairing damage from going over speed humps at speed, loads of them round here have scrapes from exhausts on.
As everyone always asks what things are, here is a speed hump (shamelessly stolen from Wikipedia):
What are the points of exhausts?
Why can't we just let the gases out into the engine compartment, or out the front or side of the engine?
If we can't let them into the engine compartment, why can't we just let it out at the side of the car, instead of at the back?