"SoCo Smog Test is a woman-owned and operated Star test-only station. What's more, it's an eco-friendly facility, certified by the Green Business Bureau. A technician smog-checks all kinds of vehicles, including diesel, hybrids, and RVs, while the owners are waiting in a comfortable lounge area, enjoying free snacks and drinks. At this test-only station, a technician inspects vehicles to make sure they're not releasing noxious fumes that could harm the environment."