Dash Labs : Dash built an app that utilizes an Onboard Diagnostic Reader, or OBDII, which plugs into vehicles then feeds vehicle performance information to your phone in real time.
The researchers examined the prevailing inspection system called On-Board Diagnostics II (OBD-II), which tests for excessive carbon monoxide, hydrocarbons, and nitrogen oxides, and also checks the power-train systems for problems that might eventually lead to elevated emissions levels.