Yes there is a saliva test. But as far as I know, it cant tell how high you are, just when you last smoked. Which IMO leaves some gray area. Im sure they could make something to put in your car you gotta pay for to test if your sober. They love money. A urine test wouldnt tell you anything. Just if they smoked in the last 14-90 days. Pot stroes itself in your fat cells, so it stays in fat people longer than skinny people. It is not phyically addicting, u dont TRY and kick pot. There are no withdrawals whatsoever. It is mentally addicting to SOME people, these being the type that use it as a cop out for not finding a job, or being plain lazy. I like how bigmike said he doesnt drink or smoke, but he does drink caffeine. This is sooo true, people dont look at how many substances they take everyday, that affect their motor skills, judgement, and all that. They just believe what was imprinted in tehir minds when they were early on, or stick their head in the dirt, and refuse to listen to NEW FACTS, that prove old ways of thinking are ignorant.