1. Are there cars I can drive in FO3?
2. I got an assault rifle. in Fallout (brother hood of steel) you can choose to aim , single fire and burst mode. how can I change it in FO3. cus My aim is only 10-15% which is worth than my pistol.
3. Once you draw out your weapon(assault rifle from your back). how can you but it back instead of holdding in on my hand. I can only use set on chair. and stand up.
4. can you kill the trade like Crazy wolfgang , Crow Doc Hoff .etc... cus in the begining I want to get some good stuff so I follow them all the way until them got killed by other NPC. and I pick the stuff from their kills and sell it tio them. but they got killed at the end . so will they come back?

5. how many NPC I can ast the hire them or ask to them to join me as a party member?


Any answer will be great and thankful

Only scrapped cars.

You can change firing mode.

Hold the draw key to return weapon.

You can kill anyone except the essentials (they dont die) or chidren. Remember named npcs dont respawn

One companion is allowed, except on a certain circunstance

1:Nope.
2:You can't change the rate of fire. Neither in VATS and neither in real time, AFAIK.
3:hold the reload button down for a little while.
4:You can kill them, and they as far as I know, won't respawn.
5:7 or 8, but only one joins you.

If you are on PC, there will be mods to fix most of things what are not included in vanilla Fallout 3.

There is party limit remover mod out there.
Car/pilotable vertibird mod is going on AFAIK.

Thank you all verymuch for the reply it really helps.