In the Grand Canyon state, it's illegal to slow traffic down by traveling below the speed limit. However, it's also illegal to "camp," or use the left (or passing lane) as a travel lane. In most states, the law mandates drivers to travel in the right lane and use the left lane strictly as a passing lane. If you travel in the left lane and slow other drivers down, Republican Rep. Teresa Martinez is coming after you with a new bill. She became inspired to propose the bill when she found herself caught in traffic caused by a bad driver....