Q: Passage: The original Knight Rider series followed the adventures of Michael Knight, a modern-day crime fighter who uses a technologically advanced, artificially intelligent automobile. This car is virtually indestructible, due to a high-tech coating applied to it. This series debuted in 1982 and ran for four seasons on NBC. These adventures were continued with the television films Knight Rider 2000 and Knight Rider 2010 and the short-lived Team Knight Rider. One other television movie, Knight Rider, served as a pilot for the 2008 television series Knight Rider. In 1985, a spin-off series, Code of Vengeance, also premiered.

Question: Based on this passage, how many seasons are there of knight rider? Let's give stream of consciousness first:
The important part for answering this question is: This series debuted in 1982 and ran for four seasons on NBC. Therefore, the final answer is four seasons.