WCIF a hack that....

[Amalia81]

Stops sims from getting the "buy a car" want unless there's a driveway on the lot?  I'm tired of seeing this want pop up when I don't have room for a driveway. 

[rwills]

Doubt that there is (or could be) anything specifically keyed to the presence of a driveway.

There are some mods out there that suppress wants for expensive items, but they are global mods which would affect all Sims in the game.

So, two other possibilities:

1) Using full-feature mods such as Insimenator or Blender or other less full-function mod items*, you could re-roll the wants of any particular Sim

2) You could fulfill the car want without purchasing the actual vehicle by using a want-fulfilling hacked item such as the painting here, whose purchase fulfills the car want:

http://www.modthesims.info/download.php?t=122834

* For example, the Hypno-wheel at Simslice ($$): http://www.simslice.com/thesims2/ts2objects-pg10.htm

Also at the booty (simslice-ts2-hypnowheel.zip): http://paysites.mustbedestroyed.org/booty/simslice/objects/
.

[Amalia81]

The car painting is perfect.  Thank you!