will removing parts of the interior of my vehicle allow it to travel faster?

it wont make any noticeable difference in theory yes but in reality you wont notice any difference.

After you've done that you can start drilling holes in everything to lose some more weight if it breaks you've drilled too many holes

The engine and transmission will likely max out at the same speed. You'll get better mileage.

Yes- the weight of the car is reduced

Yes any weight reduction at all is always better ignore all these non gear heads i have weight reducted my integra to where i can actually pick it up partially lol anyone who says anything is just mad that our tuned tin cans can beat there "bought" cars

Cool

Sure take the dash and steering wheel out first.

Yes, proportionally to the amount of weight is removed.

yes especially the steering wheel

The lighter the weight, the faster you go. This will be the cheapest way to gain performance. Be sure to get rid of the spare tire and A/C and all the power equipment.

should do