At the beginning of July, all yellow-stickered partial-hybrid vehicles are officially banned from HOV areas of the highway unless they meet mandated passenger criteria. There was a time when all yellow-stickered partial-hybrid vehicles were allowed on designated HOV areas of California state highways - even if they had only one passenger. Now, the state isn't being so lenient.Happily, the natural-gas-powered Honda Civic gets a white sticker (coy smile).

That's right. Vehicles clad in?