Governor Leavitt was supporting similar requirements in Utah before he left to head the EPA. I need to research this as they may already be in effect. Right now only the more populated counties require an emmissions test. It's not required in my county yet, but I expect that may change. The one I don't particularly like would be to require pre-emission vehicles to pass if you swap to an engine built since emmision-regulation started though I expect it might be tough to enforce.
