Putting petrol/brake lines inside car

[seanos]

I'm replacing the brake and petrol lines on the underbody of the car.

I was thinking about running them through the inside of the car to avoid damaging them on speed bumps and the likes.

My questions are:

Is this as simple as drilling 2 holes under the era seat and through the bulkhead?
Is there anything I need to take into account while doing this?
Should I run the lines down the centre or along the sides?

[keith]

i wouldn't run the petrol lines inside the car unless you (and your passengers) are going to wear full length fire-retardant suits, gloves and headgear.