An infrared (IR) thermometer lab offers the opportunity to give science students a chance to measure surface temperatures, utilizing off-the-shelf technology. Potential areas of study include astronomy (exoplanets), electromagnetic spectrum, chemistry, evaporation rates, anatomy, crystal formation, and water or liquids. This article presents one activity wherein students use an IR thermometer to investigate car color and heat by collecting data from cars in the teacher parking lot. Students examine various materials, metals, color surfaces, and textures on the cars. As a result of the activity, students discover a connection between car color and temperature. Also, they gain an understanding for a wavelength they cannot see (infrared). (Contains 10 resources.)