Project sound insulation, Determined to get rid of some road noise Options

[GotToyota]

Alright guys, I decided to tackle a project similar to what a member on here did by getting rid of some noise with a carpeting material. I'm attempting the same thing, except with my door panels and rear panels. I went to Home Depot and bought a 6'x9' roll of carpet padding for $30, along with a can of 3M rubber and vinyl spray adhesive. I already tried to deaden the sound a bit by using some extra Dynamat I had, but it didn't help much at all. Spray the door panel on the areas where you will be placing the padding, then rip pieces to the size of your choice and place accordingly. WARNING: You might want to let these panels sit overnight, because the smell isn't too pleasant.

Pics of the materials:


Starting door panel:


Door panel finished:


After I get everything finished I'll let you guys know how well this worked. I spent $40 in materials with tax, so it would be a pretty cheap solution to getting rid of some exterior road noise. Not the prettiest solution, but I feel it should help out greatly.

-Matt

[DEATH]

Hadn't noticed them in the doors but I did notice them located next to the rear speakers - those are for sound deadening. Again - ever owned an old dot matrix printer? With the cover up for access the printer is loud as sin - close the printer while it's still printing and you notice a dramatic reduction in noise. Older theatres had a similar setup to reduce outside noise.
Again - supposedly this is just one of the things they did to reduce noise from outside the cabin.