Final answer:
The term 'xcelerate' does not have a widely recognized definition for categorizing bad drivers; the options provided (Accelerators, Champions, Igniters, Decelerators) are not standard terms. Context from the specific company or program is required to provide a precise answer.
Step-by-step explanation:
The term xcelerate seems to be a brand or company-specific term, and without context, it's not possible to accurately define what xcelerate calls bad drivers. However, common terminology for different levels of driving skill doesn't include any of the options listed (Accelerators, Champions, Igniters, Decelerators). Typically, inexperienced or unsafe drivers might be informally referred to as 'bad drivers' or 'dangerous drivers', rather than any of the terms provided. It's important to remember that context matters, and within a specific program or company's protocol, they may have unique terms for different skill levels or behaviors of drivers.