Here is the Virginia law covering these things:
§ 46.2-1086. Devices for emission of smoke screens, gas projectors or flame throwers; prohibited.
It shall be a Class 6 felony to install or to aid or abet in installing, in any manner, in or on any motor vehicle any device, appliance, equipment, or instrument of any kind, character, or description, or any part of such device, appliance, equipment, or instrument, designed for generating or emitting smoke, thereby creating what is commonly known as a "smoke screen," or of emitting any gas or flame which may be a hindrance or obstruction to traffic. It shall also be a Class 6 felony to knowingly possess or drive on the highways any motor vehicle so equipped.
Additionally, the driver's license of any person convicted of a violation of this section shall be suspended for six months from the date of conviction.
As found here:
http://leg1.state.va.us/cgi-bin/legp504.exe?000+cod+46.2-1086If you can afford to lose your drivers license for half a year then I say go for it, could be fun... think of all the new and different folks you'll meet on the bus, or hitch hiking.
Also sounds like if someone helps you install them they could be in about as much trouble as you could be.
Just consider the safety aspect and if that is not enough to change your mind, then think about the legal consequences.
Grigg
